Methods of determining a surgical margin and methods of use thereof

ABSTRACT

Provided herein are methods of determining a surgical margin and the site and size of a tissue to be resected from a subject, and methods of use thereof.

CROSS REFERENCE TO RELATED APPLICATION

This application is a continuation of U.S. patent application Ser. No. 18/181,943, filed Mar. 10, 2023, which is a continuation of U.S. patent application Ser. No. 17/981,082, now U.S. Pat. No. 11,624,063, filed Nov. 4, 2022, which is a continuation of U.S. patent application Ser. No. 17/864,785, now U.S. Pat. No. 11,492,612, filed Jul. 14, 2022, which is a continuation of U.S. patent application Ser. No. 17/549,175, now U.S. Pat. No. 11,407,992, filed Dec. 13, 2021, which is a continuation of International Application PCT/US2021/036415, with an international filing date of Jun. 8, 2021, which claims priority to U.S. Provisional Patent Application No. 63/036,195, filed Jun. 8, 2020. The entire contents of the foregoing application are incorporated herein by reference.

BACKGROUND

Cells within a tissue of a subject have differences in cell morphology and/or function due to varied analyte levels (e.g., gene and/or protein expression) within the different cells. The specific position of a cell within a tissue (e.g., the cell's position relative to neighboring cells or the cell's position relative to the tissue microenvironment) can affect, e.g., the cell's morphology, differentiation, fate, viability, proliferation, behavior, and signaling and cross-talk with other cells in the tissue.

Spatial heterogeneity has been previously studied using techniques that only provide data for a small handful of analytes in the context of an intact tissue or a portion of a tissue, or provide a lot of analyte data for single cells, but fail to provide information regarding the position of the single cell in a parent biological sample (e.g., tissue sample).

SUMMARY

Provided herein are method of identifying a surgical margin of a tissue to be resected in a subject, the method comprising: (a) contacting a tissue sample obtained from the subject to an array comprising a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises (i) a capture domain that specifically binds to an analyte of the tissue sample and (ii) a spatial barcode; (b) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (c) comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the surgical margin of the tissue to be resected from the subject based on the comparison.

Also provided herein are methods of determining size and site of a tissue to be resected from a subject, the method comprising: (a) contacting a tissue sample obtained from the subject to an array comprising a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises (i) a capture domain that binds specifically to an analyte of the tissue sample and (ii) a spatial barcode; (b) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (c) comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at a different location in the tissue sample, and determining the size and site of the tissue to be resected from the subject based on the comparison.

Also provided herein are methods of reducing the risk of re-excision of a tissue, the method comprising: (a) contacting a tissue sample to an array comprising a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises a (i) capture domain that specifically binds to an analyte of the tissue sample and (ii) a spatial barcode; (b) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (c) comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the surgical margin based on the comparison.

Also provided herein are methods of reducing the rate of recurrence of a tissue abnormality in a subject, the method comprising: resecting tissue from the subject using a surgical margin previously determined using a method comprising the steps of: (a) contacting a tissue sample obtained from the subject to an array comprising a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises a (i) capture domain that specifically binds to an analyte of the tissue sample and (ii) a spatial barcode; (b) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (c) comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the surgical margin based on the comparison.

In some embodiments, the array comprises a slide. In some embodiments, the array is a bead array.

In some embodiments, step (b) comprises sequencing (i) all or a part of the nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof. In some embodiments, the sequencing is high throughput sequencing. In some embodiments, step (b) comprises extending a 3′ end of the capture probe using the specifically bound analyte as a template to generate an extended capture probe. In some embodiments, step (b) further comprises generating a single-stranded nucleic acid comprising a nucleic acid sequence that is complementary to all or a part of the extended capture probe.

Also provided herein are methods of identifying a surgical margin of a tissue to be resected, the method comprising: (a) contacting a tissue sample to a plurality of analyte capture agents, wherein an analyte capture agent of the plurality of analyte capture agents comprises an analyte binding moiety barcode, an analyte capture sequence, and an analyte binding moiety that binds specifically to an analyte; (b) disposing the tissue sample onto an array, wherein the array comprises a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises a spatial barcode and a capture domain that binds specifically to the analyte capture sequence; (c) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte binding moiety barcode or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (d) comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the surgical margin of the tissue to be resected based on the comparison.

Also provided herein are methods of determining size and site of a tissue to be resected from a subject, the method comprising: (a) contacting a tissue sample obtained from the subject to a plurality of analyte capture agents, wherein an analyte capture agent of the plurality of analyte capture agents comprises an analyte binding moiety barcode, an analyte capture sequence, and an analyte binding moiety that binds specifically to an analyte; (b) disposing the tissue sample onto an array, wherein the array comprises a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises a spatial barcode and a capture domain that binds specifically to the analyte capture sequence; (c) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte binding moiety barcode or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (d) comparing the presence of the analyte at the location in the tissue sample to the presence of the analyte at different location(s) in the tissue sample, and determining the size and site of the tissue to be resected from the subject based on the comparison.

Also provided herein are methods of reducing the rate of recurrence of a tissue abnormality in a subject, the method comprising: resecting tissue from the subject using a surgical margin previously determined using a method comprising the steps of: (a) contacting a tissue sample obtained from the subject to a plurality of analyte capture agents, wherein an analyte capture agent of the plurality of analyte capture agents comprises an analyte binding moiety barcode, an analyte capture sequence, and an analyte binding moiety that binds specifically to an analyte; (b) disposing the tissue sample onto an array, wherein the array comprises a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises a spatial barcode and a capture domain that binds specifically to the analyte capture sequence; (c) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte binding moiety barcode or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (d) comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the surgical margin based on the comparison.

In some embodiments, step (c) comprises sequencing (i) all or a part of the nucleic acid sequence corresponding to the analyte binding moiety barcode or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof. In some embodiments, the sequencing is high throughput sequencing. In some embodiments, step (c) comprises extending a 3′ end of the capture probe using the specifically bound analyte capture agent as a template to generate an extended capture probe. In some embodiments, step (c) further comprises generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe.

In some embodiments, the array comprises a slide. In some embodiments, the array comprises a slide having the plurality of capture probes. In some embodiments, the array is a bead array.

In some embodiments, the tissue to be resected is a tumor. In some embodiments, the tissue to be resected is infected tissue, necrotic tissue, or diseased tissue. In some embodiments, the resected tissue is a tumor. In some embodiments, the resected tissue is infected tissue, necrotic tissue, or diseased tissue.

In some embodiments, the analyte is RNA. In some embodiments, the RNA is mRNA. In some embodiments, the analyte is DNA. In some embodiments, the DNA is genomic DNA.

In some embodiments, the subject is suspected of or diagnosed as having a cancer. In some embodiments, the cancer is breast cancer. In some embodiments, the subject is suspected of or diagnosed as having ductal carcinoma in situ. In some embodiments, the analyte is a protein. In some embodiments, the protein is an intracellular protein. In some embodiments, the protein is an extracellular protein. In some embodiments, the analyte binding moiety is an antibody or an antigen-binding antibody fragment.

Various embodiments of the features of this disclosure are described herein. However, it should be understood that such embodiments are provided merely by way of example, and numerous variations, changes, and substitutions can occur to those skilled in the art without departing from the scope of this disclosure. It should also be understood that various alternatives to the specific embodiments described herein are also within the scope of this disclosure.

DESCRIPTION OF DRAWINGS

The following drawings illustrate certain embodiments of the features and advantages of this disclosure. These embodiments are not intended to limit the scope of the appended claims in any manner. Like reference symbols in the drawings indicate like elements.

FIG. 1 is a schematic diagram showing an example of a barcoded capture probe, as described herein.

FIG. 2 is a schematic illustrating a cleavable capture probe, wherein the cleaved capture probe can enter into a non-permeabilized cell and bind to target analytes within the sample.

FIG. 3 is a schematic diagram of an exemplary multiplexed spatially-barcoded feature.

FIG. 4 is a schematic showing an exemplary method of determining a surgical margin (e.g., a tumor margin) of a tissue to be resected from a subject.

DETAILED DESCRIPTION

This application is based on the discovery of a method of analyzing spatial expression profiles of analytes in tissue sections and its applications on determining surgical margins and methods of treating patients in need thereof.

Spatial analysis methodologies and compositions described herein can provide a vast amount of analyte and/or expression data for a variety of analytes within a biological sample at high spatial resolution, while retaining native spatial context. Spatial analysis methods and compositions can include, e.g., the use of a capture probe including a spatial barcode (e.g., a nucleic acid sequence that provides information as to the location or position of an analyte within a cell or a tissue sample (e.g., mammalian cell or a mammalian tissue sample) and a capture domain that is capable of binding to an analyte (e.g., a protein and/or a nucleic acid) produced by and/or present in a cell. Spatial analysis methods and compositions can also include the use of a capture probe having a capture domain that captures an intermediate agent for indirect detection of an analyte. For example, the intermediate agent can include a nucleic acid sequence (e.g., a barcode) associated with the intermediate agent. Detection of the intermediate agent is therefore indicative of the analyte in the cell or tissue sample.

Non-limiting aspects of spatial analysis methodologies and compositions are described in U.S. Pat. Nos. 10,774,374, 10,724,078, 10,480,022, 10,059,990, 10,041,949, 10,002,316, 9,879,313, 9,783,841, 9,727,810, 9,593,365, 8,951,726, 8,604,182, 7,709,198, U.S. Patent Application Publication Nos. 2020/239946, 2020/080136, 2020/0277663, 2020/024641, 2019/330617, 2019/264268, 2020/256867, 2020/224244, 2019/194709, 2019/161796, 2019/085383, 2019/055594, 2018/216161, 2018/051322, 2018/0245142, 2017/241911, 2017/089811, 2017/067096, 2017/029875, 2017/0016053, 2016/108458, 2015/000854, 2013/171621, WO 2018/091676, WO 2020/176788, Rodrigues et al., Science 363(6434):1463-1467, 2019; Lee et al., Nat. Protoc. 10(3):442-458, 2015; Trejo et al., PLoS ONE 14(2):e0212031, 2019; Chen et al., Science 348(6233):aaa6090, 2015; Gao et al., BMC Biol. 15:50, 2017; and Gupta et al., Nature Biotechnol. 36:1197-1202, 2018; the Visium Spatial Gene Expression Reagent Kits User Guide (e.g., Rev C, dated June 2020), and/or the Visium Spatial Tissue Optimization Reagent Kits User Guide (e.g., Rev C, dated July 2020), both of which are available at the 10× Genomics Support Documentation website, and can be used herein in any combination. Further non-limiting aspects of spatial analysis methodologies and compositions are described herein.

Some general terminology that may be used in this disclosure can be found in Section (I)(b) of WO 2020/176788 and/or U.S. Patent Application Publication No. 2020/0277663. Typically, a “barcode” is a label, or identifier, that conveys or is capable of conveying information (e.g., information about an analyte in a sample, a bead, and/or a capture probe). A barcode can be part of an analyte, or independent of an analyte. A barcode can be attached to an analyte. A particular barcode can be unique relative to other barcodes. For the purpose of this disclosure, an “analyte” can include any biological substance, structure, moiety, or component to be analyzed. The term “target” can similarly refer to an analyte of interest.

Analytes can be broadly classified into one of two groups: nucleic acid analytes, and non-nucleic acid analytes. Examples of non-nucleic acid analytes include, but are not limited to, lipids, carbohydrates, peptides, proteins, glycoproteins (N-linked or O-linked), lipoproteins, phosphoproteins, specific phosphorylated or acetylated variants of proteins, amidation variants of proteins, hydroxylation variants of proteins, methylation variants of proteins, ubiquitylation variants of proteins, sulfation variants of proteins, viral proteins (e.g., viral capsid, viral envelope, viral coat, viral accessory, viral glycoproteins, viral spike, etc.), extracellular and intracellular proteins, antibodies, and antigen binding fragments. In some embodiments, the analyte(s) can be localized to subcellular location(s), including, for example, organelles, e.g., mitochondria, Golgi apparatus, endoplasmic reticulum, chloroplasts, endocytic vesicles, exocytic vesicles, vacuoles, lysosomes, etc. In some embodiments, analyte(s) can be peptides or proteins, including without limitation antibodies and enzymes. Additional examples of analytes can be found in Section (I)(c) of WO 2020/176788 and/or U.S. Patent Application Publication No. 2020/0277663. In some embodiments, an analyte can be detected indirectly, such as through detection of an intermediate agent, for example, a ligation product or an analyte capture agent (e.g., an oligonucleotide-conjugated antibody), such as those described herein.

A “biological sample” is typically obtained from the subject for analysis using any of a variety of techniques including, but not limited to, biopsy, surgery, and laser capture microscopy (LCM), and generally includes cells and/or other biological material from the subject. In some embodiments, a biological sample can be a tissue section. In some embodiments, a biological sample can be a fixed and/or stained biological sample (e.g., a fixed and/or stained tissue section). Non-limiting examples of stains include histological stains (e.g., hematoxylin and/or eosin) and immunological stains (e.g., fluorescent stains). In some embodiments, a biological sample (e.g., a fixed and/or stained biological sample) can be imaged. Biological samples are also described in Section (I)(d) of WO 2020/176788 and/or U.S. Patent Application Publication No. 2020/0277663.

In some embodiments, a biological sample is permeabilized with one or more permeabilization reagents. For example, permeabilization of a biological sample can facilitate analyte capture. Exemplary permeabilization agents and conditions are described in Section (I)(d)(ii)(13) or the Exemplary Embodiments Section of WO 2020/176788 and/or U.S. Patent Application Publication No. 2020/0277663.

Array-based spatial analysis methods involve the transfer of one or more analytes from a biological sample to an array of features on a substrate, where each feature is associated with a unique spatial location on the array. Subsequent analysis of the transferred analytes includes determining the identity of the analytes and the spatial location of the analytes within the biological sample. The spatial location of an analyte within the biological sample is determined based on the feature to which the analyte is bound (e.g., directly or indirectly) on the array, and the feature's relative spatial location within the array.

A “capture probe” refers to any molecule capable of capturing (directly or indirectly) and/or labelling an analyte (e.g., an analyte of interest) in a biological sample. In some embodiments, the capture probe is a nucleic acid or a polypeptide. In some embodiments, the capture probe includes a barcode (e.g., a spatial barcode and/or a unique molecular identifier (UMI)) and a capture domain). In some embodiments, a capture probe can include a cleavage domain and/or a functional domain (e.g., a primer-binding site, such as for next-generation sequencing (NGS)). See, e.g., Section (II)(b) (e.g., subsections (i)-(vi)) of WO 2020/176788 and/or U.S. Patent Application Publication No. 2020/0277663. Generation of capture probes can be achieved by any appropriate method, including those described in Section (II)(d)(ii) of WO 2020/176788 and/or U.S. Patent Application Publication No. 2020/0277663.

FIG. 1 is a schematic diagram showing an exemplary capture probe, as described herein. As shown, the capture probe 102 is optionally coupled to a feature 101 by a cleavage domain 103, such as a disulfide linker. The capture probe can include a functional sequence 104 that are useful for subsequent processing. The functional sequence 104 can include all or a part of sequencer specific flow cell attachment sequence (e.g., a P5 or P7 sequence), all or a part of a sequencing primer sequence, (e.g., a R1 primer binding site, a R2 primer binding site), or combinations thereof. The capture probe can also include a spatial barcode 105. The capture probe can also include a unique molecular identifier (UMI) sequence 106. While FIG. 1 shows the spatial barcode 105 as being located upstream (5′) of UMI sequence 106, it is to be understood that capture probes wherein UMI sequence 106 is located upstream (5′) of the spatial barcode 105 is also suitable for use in any of the methods described herein. The capture probe can also include a capture domain 107 to facilitate capture of a target analyte. The capture domain can have a sequence complementary to a sequence of a nucleic acid analyte. The capture domain can have a sequence complementary to a connected probe described herein. The capture domain can have a sequence complementary to a capture handle sequence present in an analyte capture agent. The capture domain can have a sequence complementary to a splint oligonucleotide. Such splint oligonucleotide, in addition to having a sequence complementary to a capture domain of a capture probe, can have a sequence complementary to a sequence of a nucleic acid analyte, a portion of a connected probe described herein, a capture handle sequence described herein, and/or a methylated adaptor described herein.

The functional sequences can generally be selected for compatibility with any of a variety of different sequencing systems, e.g., Ion Torrent Proton or PGM, Illumina sequencing instruments, PacBio, Oxford Nanopore, etc., and the requirements thereof. In some embodiments, functional sequences can be selected for compatibility with non-commercialized sequencing systems. Examples of such sequencing systems and techniques, for which suitable functional sequences can be used, include (but are not limited to) Ion Torrent Proton or PGM sequencing, Illumina sequencing, PacBio SMRT sequencing, and Oxford Nanopore sequencing. Further, in some embodiments, functional sequences can be selected for compatibility with other sequencing systems, including non-commercialized sequencing systems.

In some embodiments, the spatial barcode 105 and functional sequences 104 is common to all of the probes attached to a given feature. In some embodiments, the UMI sequence 106 of a capture probe attached to a given feature is different from the UMI sequence of a different capture probe attached to the given feature.

FIG. 2 is a schematic illustrating a cleavable capture probe, wherein the cleaved capture probe can enter into a non-permeabilized cell and bind to analytes within the sample. The capture probe 201 contains a cleavage domain 202, a cell penetrating peptide 203, a reporter molecule 204, and a disulfide bond (—S—S—). 205 represents all other parts of a capture probe, for example a spatial barcode and a capture domain. Cleavable capture probe are further described in WO 2020/176788 and/or U.S. Patent Application Publication No. 2020/0277663, each of which is incorporated by reference in its entirety.

For multiple capture probes that are attached to a common array feature, the one or more spatial barcode sequences of the multiple capture probes can include sequences that are the same for all capture probes coupled to the feature, and/or sequences that are different across all capture probes coupled to the feature.

FIG. 3 is a schematic diagram of an exemplary multiplexed spatially-barcoded feature. In FIG. 3 , the feature 301 can be coupled to spatially-barcoded capture probes, wherein the spatially-barcoded probes of a particular feature can possess the same spatial barcode, but have different capture domains designed to associate the spatial barcode of the feature with more than one target analyte. For example, a feature may be coupled to four different types of spatially-barcoded capture probes, each type of spatially-barcoded capture probe possessing the spatial barcode 302. One type of capture probe associated with the feature includes the spatial barcode 302 in combination with a poly(T) capture domain 303, designed to capture mRNA target analytes. A second type of capture probe associated with the feature includes the spatial barcode 302 in combination with a random N-mer capture domain 304 for gDNA analysis. A third type of capture probe associated with the feature includes the spatial barcode 302 in combination with a capture domain complementary to a capture handle sequence of an analyte capture agent of interest 305. A fourth type of capture probe associated with the feature includes the spatial barcode 302 in combination with a capture domain that can specifically bind a nucleic acid molecule 306 that can function in a CRISPR assay (e.g., CRISPR/Cas9). While only four different capture probe-barcoded constructs are shown in FIG. 3 , capture-probe barcoded constructs can be tailored for analyses of any given analyte associated with a nucleic acid and capable of binding with such a construct. For example, the schemes shown in FIG. 3 can also be used for concurrent analysis of other analytes disclosed herein, including, but not limited to: (a) mRNA, a lineage tracing construct, cell surface or intracellular proteins and metabolites, and gDNA; (b) mRNA, accessible chromatin (e.g., ATAC-seq, DNase-seq, and/or MNase-seq) cell surface or intracellular proteins and metabolites, and a perturbation agent (e.g., a CRISPR crRNA/sgRNA, TALEN, zinc finger nuclease, and/or antisense oligonucleotide as described herein); (c) mRNA, cell surface or intracellular proteins and/or metabolites, a barcoded labelling agent (e.g., the MHC multimers described herein), and a V(D)J sequence of an immune cell receptor (e.g., T-cell receptor). In some embodiments, a perturbation agent can be a small molecule, an antibody, a drug, an aptamer, a miRNA, a physical environmental (e.g., temperature change), or any other known perturbation agents. See, e.g., Section (II)(b) (e.g., subsections (i)-(vi)) of WO 2020/176788 and/or U.S. Patent Application Publication No. 2020/0277663. Generation of capture probes can be achieved by any appropriate method, including those described in Section (II)(d)(ii) of WO 2020/176788 and/or U.S. Patent Application Publication No. 2020/0277663.

Capture probes attached to a single array feature can include identical (or common) spatial barcode sequences, different spatial barcode sequences, or a combination of both. Capture probes attached to a feature can include multiple sets of capture probes. Capture probes of a given set can include identical spatial barcode sequences. The identical spatial barcode sequences can be different from spatial barcode sequences of capture probes of another set.

The plurality of capture probes can include spatial barcode sequences (e.g., nucleic acid barcode sequences) that are associated with specific locations on a spatial array. For example, a first plurality of capture probes can be associated with a first region, based on a spatial barcode sequence common to the capture probes within the first region, and a second plurality of capture probes can be associated with a second region, based on a spatial barcode sequence common to the capture probes within the second region. The second region may or may not be associated with the first region. Additional pluralities of capture probes can be associated with spatial barcode sequences common to the capture probes within other regions. In some embodiments, the spatial barcode sequences can be the same across a plurality of capture probe molecules.

In some embodiments, multiple different spatial barcodes are incorporated into a single arrayed capture probe. For example, a mixed but known set of spatial barcode sequences can provide a stronger address or attribution of the spatial barcodes to a given spot or location, by providing duplicate or independent confirmation of the identity of the location. In some embodiments, the multiple spatial barcodes represent increasing specificity of the location of the particular array point.

In some embodiments, more than one analyte type (e.g., nucleic acids and proteins) from a biological sample can be detected (e.g., simultaneously or sequentially) using any appropriate multiplexing technique, such as those described in Section (IV) of WO 2020/176788 and/or U.S. Patent Application Publication No. 2020/0277663.

In some embodiments, detection of one or more analytes (e.g., protein analytes) can be performed using one or more analyte capture agents. As used herein, an “analyte capture agent” refers to an agent that interacts with an analyte (e.g., an analyte in a biological sample) and with a capture probe (e.g., a capture probe attached to a substrate or a feature) to identify the analyte. In some embodiments, the analyte capture agent includes: (i) an analyte binding moiety (e.g., that binds to an analyte), for example, an antibody or antigen-binding fragment thereof; (ii) analyte binding moiety barcode; and (iii) an analyte capture sequence. As used herein, the term “analyte binding moiety barcode” refers to a barcode that is associated with or otherwise identifies the analyte binding moiety. As used herein, the term “analyte capture sequence” refers to a region or moiety configured to hybridize to, bind to, couple to, or otherwise interact with a capture domain of a capture probe. In some cases, an analyte binding moiety barcode (or portion thereof) may be able to be removed (e.g., cleaved) from the analyte capture agent. Additional description of analyte capture agents can be found in Section (II)(b)(ix) of WO 2020/176788 and/or Section (II)(b)(viii) U.S. Patent Application Publication No. 2020/0277663.

There are at least two methods to associate a spatial barcode with one or more neighboring cells, such that the spatial barcode identifies the one or more cells, and/or contents of the one or more cells, as associated with a particular spatial location. One method is to promote analytes or analyte proxies (e.g., intermediate agents) out of a cell and towards a spatially-barcoded array (e.g., including spatially-barcoded capture probes). Another method is to cleave spatially-barcoded capture probes from an array and promote the spatially-barcoded capture probes towards and/or into or onto the biological sample.

In some cases, capture probes may be configured to prime, replicate, and consequently yield optionally barcoded extension products from a template (e.g., a DNA or RNA template, such as an analyte or an intermediate agent (e.g., a ligation product or an analyte capture agent), or a portion thereof), or derivatives thereof (see, e.g., Section (II)(b)(vii) of WO 2020/176788 and/or U.S. Patent Application Publication No. 2020/0277663 regarding extended capture probes). In some cases, capture probes may be configured to form ligation products with a template (e.g., a DNA or RNA template, such as an analyte or an intermediate agent, or portion thereof), thereby creating ligations products that serve as proxies for a template.

As used herein, an “extended capture probe” refers to a capture probe having additional nucleotides added to the terminus (e.g., 3′ or 5′ end) of the capture probe thereby extending the overall length of the capture probe. For example, an “extended 3′ end” indicates additional nucleotides were added to the most 3′ nucleotide of the capture probe to extend the length of the capture probe, for example, by polymerization reactions used to extend nucleic acid molecules including templated polymerization catalyzed by a polymerase (e.g., a DNA polymerase or a reverse transcriptase). In some embodiments, extending the capture probe includes adding to a 3′ end of a capture probe a nucleic acid sequence that is complementary to a nucleic acid sequence of an analyte or intermediate agent specifically bound to the capture domain of the capture probe. In some embodiments, the capture probe is extended using reverse transcription. In some embodiments, the capture probe is extended using one or more DNA polymerases. The extended capture probes include the sequence of the capture probe and the sequence of the spatial barcode of the capture probe.

In some embodiments, extended capture probes are amplified (e.g., in bulk solution or on the array) to yield quantities that are sufficient for downstream analysis, e.g., via DNA sequencing. In some embodiments, extended capture probes (e.g., DNA molecules) act as templates for an amplification reaction (e.g., a polymerase chain reaction).

Additional variants of spatial analysis methods, including in some embodiments, an imaging step, are described in Section (II)(a) of WO 2020/176788 and/or U.S. Patent Application Publication No. 2020/0277663. Analysis of captured analytes (and/or intermediate agents or portions thereof), for example, including sample removal, extension of capture probes, sequencing (e.g., of a cleaved extended capture probe and/or a cDNA molecule complementary to an extended capture probe), sequencing on the array (e.g., using, for example, in situ hybridization or in situ ligation approaches), temporal analysis, and/or proximity capture, is described in Section (II)(g) of WO 2020/176788 and/or U.S. Patent Application Publication No. 2020/0277663. Some quality control measures are described in Section (II)(h) of WO 2020/176788 and/or U.S. Patent Application Publication No. 2020/0277663.

Spatial information can provide information of biological and/or medical importance. For example, the methods and compositions described herein can allow for: identification of one or more biomarkers (e.g., diagnostic, prognostic, and/or for determination of efficacy of a treatment) of a disease or disorder; identification of a candidate drug target for treatment of a disease or disorder; identification (e.g., diagnosis) of a subject as having a disease or disorder; identification of stage and/or prognosis of a disease or disorder in a subject; identification of a subject as having an increased likelihood of developing a disease or disorder; monitoring of progression of a disease or disorder in a subject; determination of efficacy of a treatment of a disease or disorder in a subject; identification of a patient subpopulation for which a treatment is effective for a disease or disorder; modification of a treatment of a subject with a disease or disorder; selection of a subject for participation in a clinical trial; and/or selection of a treatment for a subject with a disease or disorder.

Spatial information can provide information of biological importance. For example, the methods and compositions described herein can allow for: identification of transcriptome and/or proteome expression profiles (e.g., in healthy and/or diseased tissue); identification of multiple analyte types in close proximity (e.g., nearest neighbor analysis); determination of up- and/or down-regulated genes and/or proteins in diseased tissue; characterization of tumor microenvironments; characterization of tumor immune responses; characterization of cells types and their co-localization in tissue; and identification of genetic variants within tissues (e.g., based on gene and/or protein expression profiles associated with specific disease or disorder biomarkers).

Typically, for spatial array-based methods, a substrate functions as a support for direct or indirect attachment of capture probes to features of the array. A “feature” is an entity that acts as a support or repository for various molecular entities used in spatial analysis. In some embodiments, some or all of the features in an array are functionalized for analyte capture. Exemplary substrates are described in Section (II)(c) of WO 2020/176788 and/or U.S. Patent Application Publication No. 2020/0277663. Exemplary features and geometric attributes of an array can be found in Sections (II)(d)(i), (II)(d)(iii), and (II)(d)(iv) of WO 2020/176788 and/or U.S. Patent Application Publication No. 2020/0277663.

Generally, analytes and/or intermediate agents (or portions thereof) can be captured when contacting a biological sample with a substrate including capture probes (e.g., a substrate with capture probes embedded, spotted, printed, fabricated on the substrate, or a substrate with features (e.g., beads, wells) comprising capture probes). As used herein, “contact,” “contacted,” and/or “contacting,” a biological sample with a substrate refers to any contact (e.g., direct or indirect) such that capture probes can interact (e.g., bind covalently or non-covalently (e.g., hybridize)) with analytes from the biological sample. Capture can be achieved actively (e.g., using electrophoresis) or passively (e.g., using diffusion). Analyte capture is further described in Section (II)(e) of WO 2020/176788 and/or U.S. Patent Application Publication No. 2020/0277663.

In some cases, spatial analysis can be performed by attaching and/or introducing a molecule (e.g., a peptide, a lipid, or a nucleic acid molecule) having a barcode (e.g., a spatial barcode) to a biological sample (e.g., to a cell in a biological sample). In some embodiments, a plurality of molecules (e.g., a plurality of nucleic acid molecules) having a plurality of barcodes (e.g., a plurality of spatial barcodes) are introduced to a biological sample (e.g., to a plurality of cells in a biological sample) for use in spatial analysis. In some embodiments, after attaching and/or introducing a molecule having a barcode to a biological sample, the biological sample can be physically separated (e.g., dissociated) into single cells or cell groups for analysis. Some such methods of spatial analysis are described in Section (III) of WO 2020/176788 and/or U.S. Patent Application Publication No. 2020/0277663.

In some cases, spatial analysis can be performed by detecting multiple oligonucleotides that hybridize to an analyte. In some instances, for example, spatial analysis can be performed using RNA-templated ligation (RTL). Methods of RTL have been described previously. See, e.g., Credle et al., Nucleic Acids Res. 2017 Aug. 21; 45(14):e128. Typically, RTL includes hybridization of two oligonucleotides to adjacent sequences on an analyte (e.g., an RNA molecule, such as an mRNA molecule). In some instances, the oligonucleotides are DNA molecules. In some instances, one of the oligonucleotides includes at least two ribonucleic acid bases at the 3′ end and/or the other oligonucleotide includes a phosphorylated nucleotide at the 5′ end. In some instances, one of the two oligonucleotides includes a capture domain (e.g., a poly(A) sequence, a non-homopolymeric sequence). After hybridization to the analyte, a ligase (e.g., SplintR ligase) ligates the two oligonucleotides together, creating a ligation product. In some instances, the two oligonucleotides hybridize to sequences that are not adjacent to one another. For example, hybridization of the two oligonucleotides creates a gap between the hybridized oligonucleotides. In some instances, a polymerase (e.g., a DNA polymerase) can extend one of the oligonucleotides prior to ligation. After ligation, the ligation product is released from the analyte. In some instances, the ligation product is released using an endonuclease (e.g., RNAse H). The released ligation product can then be captured by capture probes (e.g., instead of direct capture of an analyte) on an array, optionally amplified, and sequenced, thus determining the location and optionally the abundance of the analyte in the biological sample.

During analysis of spatial information, sequence information for a spatial barcode associated with an analyte is obtained, and the sequence information can be used to provide information about the spatial distribution of the analyte in the biological sample. Various methods can be used to obtain the spatial information. In some embodiments, specific capture probes and the analytes they capture are associated with specific locations in an array of features on a substrate. For example, specific spatial barcodes can be associated with specific array locations prior to array fabrication, and the sequences of the spatial barcodes can be stored (e.g., in a database) along with specific array location information, so that each spatial barcode uniquely maps to a particular array location.

Alternatively, specific spatial barcodes can be deposited at predetermined locations in an array of features during fabrication such that at each location, only one type of spatial barcode is present so that spatial barcodes are uniquely associated with a single feature of the array. Where necessary, the arrays can be decoded using any of the methods described herein so that spatial barcodes are uniquely associated with array feature locations, and this mapping can be stored as described above.

When sequence information is obtained for capture probes and/or analytes during analysis of spatial information, the locations of the capture probes and/or analytes can be determined by referring to the stored information that uniquely associates each spatial barcode with an array feature location. In this manner, specific capture probes and captured analytes are associated with specific locations in the array of features. Each array feature location represents a position relative to a coordinate reference point (e.g., an array location, a fiducial marker) for the array. Accordingly, each feature location has an “address” or location in the coordinate space of the array.

Some exemplary spatial analysis workflows are described in the Exemplary Embodiments section of WO 2020/176788 and/or U.S. Patent Application Publication No. 2020/0277663. See, for example, the Exemplary embodiment starting with “In some non-limiting examples of the workflows described herein, the sample can be immersed . . . ” of WO 2020/176788 and/or U.S. Patent Application Publication No. 2020/0277663. See also, e.g., the Visium Spatial Gene Expression Reagent Kits User Guide (e.g., Rev C, dated June 2020), and/or the Visium Spatial Tissue Optimization Reagent Kits User Guide (e.g., Rev C, dated July 2020).

In some embodiments, spatial analysis can be performed using dedicated hardware and/or software, such as any of the systems described in Sections (II)(e)(ii) and/or (V) of WO 2020/176788 and/or U.S. Patent Application Publication No. 2020/0277663, or any of one or more of the devices or methods described in Sections Control Slide for Imaging, Methods of Using Control Slides and Substrates for, Systems of Using Control Slides and Substrates for Imaging, and/or Sample and Array Alignment Devices and Methods, Informational labels of WO 2020/123320.

Suitable systems for performing spatial analysis can include components such as a chamber (e.g., a flow cell or sealable, fluid-tight chamber) for containing a biological sample. The biological sample can be mounted for example, in a biological sample holder. One or more fluid chambers can be connected to the chamber and/or the sample holder via fluid conduits, and fluids can be delivered into the chamber and/or sample holder via fluidic pumps, vacuum sources, or other devices coupled to the fluid conduits that create a pressure gradient to drive fluid flow. One or more valves can also be connected to fluid conduits to regulate the flow of reagents from reservoirs to the chamber and/or sample holder.

The systems can optionally include a control unit that includes one or more electronic processors, an input interface, an output interface (such as a display), and a storage unit (e.g., a solid state storage medium such as, but not limited to, a magnetic, optical, or other solid state, persistent, writeable and/or re-writeable storage medium). The control unit can optionally be connected to one or more remote devices via a network. The control unit (and components thereof) can generally perform any of the steps and functions described herein. Where the system is connected to a remote device, the remote device (or devices) can perform any of the steps or features described herein. The systems can optionally include one or more detectors (e.g., CCD, CMOS) used to capture images. The systems can also optionally include one or more light sources (e.g., LED-based, diode-based, lasers) for illuminating a sample, a substrate with features, analytes from a biological sample captured on a substrate, and various control and calibration media.

The systems can optionally include software instructions encoded and/or implemented in one or more of tangible storage media and hardware components such as application specific integrated circuits. The software instructions, when executed by a control unit (and in particular, an electronic processor) or an integrated circuit, can cause the control unit, integrated circuit, or other component executing the software instructions to perform any of the method steps or functions described herein.

In some cases, the systems described herein can detect (e.g., register an image) the biological sample on the array. Exemplary methods to detect the biological sample on an array are described in PCT Application No. 2020/061064 and/or U.S. patent application Ser. No. 16/951,854.

Prior to transferring analytes from the biological sample to the array of features on the substrate, the biological sample can be aligned with the array. Alignment of a biological sample and an array of features including capture probes can facilitate spatial analysis, which can be used to detect differences in analyte presence and/or level within different positions in the biological sample, for example, to generate a three-dimensional map of the analyte presence and/or level. Exemplary methods to generate a two- and/or three-dimensional map of the analyte presence and/or level are described in PCT Application No. 2020/053655 and spatial analysis methods are generally described in WO 2020/061108 and/or U.S. patent application Ser. No. 16/951,864.

In some cases, a map of analyte presence and/or level can be aligned to an image of a biological sample using one or more fiducial markers, e.g., objects placed in the field of view of an imaging system which appear in the image produced, as described in the Substrate Attributes Section, Control Slide for Imaging Section of WO 2020/123320, PCT Application No. 2020/061066, and/or U.S. patent application Ser. No. 16/951,843. Fiducial markers can be used as a point of reference or measurement scale for alignment (e.g., to align a sample and an array, to align two substrates, to determine a location of a sample or array on a substrate relative to a fiducial marker) and/or for quantitative measurements of sizes and/or distances.

II. Spatial Analysis

Cancer and disease diagnosis and treatment plans are oftentimes guided by three diagnostic tools: blood work, imaging, and/or biopsies. Oftentimes, surgery is the first line of treatment when cancerous and diseased tissues are identified, especially in the early stages of the disease. When surgery is indicated, clinicians face difficult decisions on the size and site of the resection of the diseased tissue. Conclusive diagnosis and staging are oftentimes obtained after surgical resection has been completed. Unfortunately, sometimes the entire abnormal tissue is not completely removed, leaving tissue margins that contain diseased cells that can proliferate in the body and cause continued cancer and disease.

The methods described here can help support a clinician's decision on the type of surgical intervention to provide a subject with a potential cancer or diseased tissue. For example, information from practicing the described methods can help determine the size and site of tissue resection by more completely identifying abnormal tissue margins, thereby reducing the risk of re-excision and/or reducing the risk of future recurrence of the cancerous or diseased tissue in the subject.

(a) Methods of Determining the Size and Site of a Tissue to be Resected

Provided herein are methods of determining the size and site of a tissue to be resected from a subject that include: (a) contacting a tissue sample obtained from the subject to an array comprising a plurality of capture probes, where a capture probe of the plurality of capture probes comprises (i) a capture domain that binds specifically to an analyte of the tissue sample and (ii) a spatial barcode; (b) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (c) comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the size and site of a tissue to be resected from the subject based on the comparison. In some embodiments, the analyte is a DNA or RNA. In some embodiments, the analyte is a messenger RNA (mRNA) molecule. In some embodiments, the analyte is a genomic DNA. In some embodiments, the analyte comprises a full-length sequence of a biomarker described herein. In some embodiments, the analyte comprises a fragment of the sequence of a biomarker described herein. In some embodiments of any of the methods described herein, each of the plurality of capture probes comprises (i) a capture domain that binds specifically to an analyte of the tissue section and (ii) a spatial barcode. The capture probe can be any capture probe described herein. In some embodiments, the capture domain of the capture probe comprises a sequence that is substantially complementary (e.g., at least 80%, at least 85%, at least 90%, at least 95%, at least 99%, or 100% complementary) to a portion of the sequence of the analyte of the tissue sample. In some embodiments, the capture domain can have a total of about 10 nucleotides to about 125 nucleotides (or any of the subranges of this range described herein). In some embodiments, the sequence that is substantially complementary to a portion of the sequence of the analyte can be a random sequence. In some embodiments, the sequence that is substantially complementary to a portion of the sequence of the analyte can include a poly(T) oligonucleotide sequence (e.g., at least 5 contiguous Ts, at least 10 contiguous Ts, or at least 15 contiguous Ts).

In some embodiments of any of the methods described herein, step (b) comprises sequencing (i) all or a part of the nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof. In some embodiments, the sequencing is high throughput sequencing, sequencing by synthesis, sequencing by hybridization, sequencing by ligation or any of the other methods for sequencing described herein or known in the art. For example, sequencing can involve one or more of nucleic acid amplification, the ligation or addition of one or more sequencing adaptors, cleavage of the capture probe from the array, extension of the capture probe using the bound cDNA as a template, and generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe. Non-limiting methods for determining the sequence of (i) all or a part of the sequence of the target nucleic acid, or a complement thereof, or (ii) all or a part of the nucleic acid sequence corresponding to the binding moiety barcode, or a complement thereof, are described herein or are known in the art.

Also provided herein are methods of determining the size and site of a tissue to be resected from a subject that include: (a) contacting a tissue sample obtained from the subject to a plurality of analyte capture agents, where an analyte capture agent of the plurality of analyte capture agents comprises an analyte binding moiety barcode, an analyte capture sequence, and an analyte binding moiety that binds specifically to an analyte; (b) disposing the tissue sample onto an array, where the array comprises a plurality of capture probes, where a capture probe of the plurality of capture probes comprises a spatial barcode and a capture domain that binds specifically to the analyte capture sequence; (c) determining (i) all or a part of the nucleic acid sequence corresponding to the analyte binding moiety barcode or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the binding moiety barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify a presence of the analyte at a location in the tissue sample; (d) comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the size and site of a tissue to be resected from the subject based on the comparison. In some embodiments, the analyte is a protein. In some embodiments, the analyte is a full-length protein. In some embodiments, the analyte is a fragment of a protein. In some embodiments, the analyte is a byproduct of a protein. In some embodiments, the protein is any of the exemplary cancer biomarkers described herein.

In some embodiments of any of the methods described herein, each of the plurality of analyte capture agents comprises an analyte binding moiety barcode, an analyte capture sequence, and an analyte binding moiety that binds specifically to an analyte. In some embodiments, the analyte binding moiety is an antibody or an antigen-binding antibody fragment (e.g., a Fab). Any other suitable protein binding moiety known in the art can also be used as an analyte binding moiety. In some embodiments, the analyte binding moiety barcode can be any barcode described herein. In some embodiments, the analyte capture sequence can be any analyte capture sequence described herein. In some embodiments of any of the methods described herein, each of the plurality of capture probes comprises a spatial barcode and a capture domain that binds specifically to the analyte capture sequence.

The capture probe can be any capture probe described herein. In some embodiments, the capture domain of the capture probe comprises a sequence that is substantially complementary (e.g., at least 80%, at least 85%, at least 90%, at least 95%, at least 99%, or 100% complementary) to a portion of the analyte capture sequence. In some embodiments, the capture domain can have a total of about 10 nucleotides to about 125 nucleotides (or any of the subranges of this range described herein). In some embodiments, the sequence that is substantially complementary to a portion of the analyte capture sequence can be a random sequence. In some embodiments, the sequence that is substantially complementary to a portion of the analyte capture sequence can include a poly(T) oligonucleotide sequence (e.g., at least 5 contiguous Ts, at least 10 contiguous Ts, or at least 15 contiguous Ts).

In some embodiments, the determining of the sequence is by sequencing. In some embodiments, the sequencing is high throughput sequencing, sequencing by hybridization, or any of the other methods for sequencing described herein or known in the art. For example, sequencing can involve one or more of nucleic acid amplification, the ligation or addition of one or more sequencing adaptors, cleavage of the capture probe from the array, extension of the capture probe using the bound analyte capture sequence as a template, and generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe. Non-limiting methods for determining the sequence of (i) all or a part of the nucleic acid sequence corresponding to the analyte binding moiety barcode, or a complement thereof, or (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode, or a complement thereof, are described herein or are known in the art.

In some embodiments, the tissue to be resected is a tumor (e.g., a malignant or a benign tumor). In some embodiments, the tumor is a solid tumor. In some embodiments, the subject is suspected of having a cancer. In some embodiments, the subject has been previously diagnosed or identified as having a cancer (e.g., any of the exemplary cancers described herein).

Non-limiting examples of cancers referred to in any one the methods described herein include: sarcomas, carcinomas, adrenocortical carcinoma, AIDS-related cancers, anal cancer, appendix cancer, astrocytomas, atypical teratoid/rhabdoid tumor, basal cell carcinoma, bladder cancer, brain stem glioma, brain tumors (including brain stem glioma, central nervous system atypical teratoid/rhabdoid tumor, central nervous system embryonal tumors, astrocytomas, craniopharyngioma, ependymoblastoma, ependymoma, medulloblastoma, medulloepithelioma, pineal parenchymal tumors of intermediate differentiation, supratentorial primitive neuroectodermal tumors, and pineoblastoma), breast cancer, bronchial tumors, cancer of unknown primary site, carcinoid tumor, carcinoma of unknown primary site, central nervous system atypical teratoid/rhabdoid tumor, central nervous system embryonal tumors, cervical cancer, childhood cancers, chordoma, colon cancer, colorectal cancer, craniopharyngioma, endocrine pancreas islet cell tumors, endometrial cancer, ependymoblastoma, ependymoma, esophageal cancer, esthesioneuroblastoma, Ewing sarcoma, extracranial germ cell tumor, extragonadal germ cell tumor, extrahepatic bile duct cancer, gallbladder cancer, gastric (stomach) cancer, gastrointestinal carcinoid tumor, gastrointestinal stromal cell tumor, gastrointestinal stromal tumor (GIST), gestational trophoblastic tumor, glioma, head and neck cancer, heart cancer, hypopharyngeal cancer, intraocular melanoma, islet cell tumors, Kaposi's sarcoma, kidney cancer, Langerhans cell histiocytosis, laryngeal cancer, lip cancer, liver cancer, lung cancer, malignant fibrous histiocytoma bone cancer, medulloblastoma, medulloepithelioma, melanoma, Merkel cell carcinoma, Merkel cell skin carcinoma, mesothelioma, metastatic squamous neck cancer with occult primary, mouth cancer, multiple endocrine neoplasia syndromes, multiple myeloma, multiple myeloma/plasma cell neoplasm, mycosis fungoides, myelodysplastic syndromes, myeloproliferative neoplasms, nasal cavity cancer, nasopharyngeal cancer, neuroblastoma, non-melanoma skin cancer, non-small cell lung cancer, oral cancer, oral cavity cancer, oropharyngeal cancer, osteosarcoma, other brain and spinal cord tumors, ovarian cancer, ovarian epithelial cancer, ovarian germ cell tumor, ovarian low malignant potential tumor, pancreatic cancer, papillomatosis, paranasal sinus cancer, parathyroid cancer, pelvic cancer, penile cancer, pharyngeal cancer, pineal parenchymal tumors of intermediate differentiation, pineoblastoma, pituitary tumor, pleuropulmonary blastoma, primary hepatocellular liver cancer, prostate cancer, rectal cancer, renal cancer, renal cell (kidney) cancer, renal cell cancer, respiratory tract cancer, retinoblastoma, rhabdomyosarcoma, salivary gland cancer, Sezary syndrome, small cell lung cancer, small intestine cancer, soft tissue sarcoma, squamous cell carcinoma, squamous neck cancer, stomach (gastric) cancer, supratentorial primitive neuroectodermal tumors, testicular cancer, throat cancer, thymic carcinoma, thymoma, thyroid cancer, transitional cell cancer, transitional cell cancer of the renal pelvis and ureter, trophoblastic tumor, ureter cancer, urethral cancer, uterine cancer, uterine sarcoma, vaginal cancer, vulvar cancer, Waldenström macroglobulinemia, and Wilm's tumor.

In some embodiments, the tissue to be resected can include a tumor (e.g., a malignant tumor) of any of the types of cancer described herein.

In some embodiments of any one of the methods described herein, the analyte is a tumor biomarker. In some embodiments, the analyte is a tumor antigen. Exemplary tumor antigens include, but are not limited to, melanoma-associated antigen (MAGE) series of antigens (e.g., MAGE-C1 (cancer/testis antigen CT7), MAGE-B1 antigen (MAGE-XP antigen, DAM10), MAGE-B2 antigen (DAM6), MAGE-2 antigen, MAGE-4a antigen, and MAGE-4b antigen), tyrosinase, glycoprotein 100 (gp100), disialoganglioside GD-2, disialoganglioside 0-acetylated GD-3, ganglioside GM-2, epidermal growth factor receptor (EGFR), vascular endothelial growth factor receptor (VEGFR), mutant B-Raf antigen associated with melanoma and colon cancer, human epidermal growth factor receptor-2 (HER-2/neu) antigen, melanoma-associated antigen recognized by T cells (MART-1) (e.g., MART-1 26-35 peptide or MART-1 27-35 peptide), protein kinase C-binding protein, reverse transcriptase protein, A-kinase-anchoring protein (AKAP protein), vaccinia-related kinase Serine/Threonine Kinase 1(VRK1), fucosyltransferase (T6-7), zinc finger protein 258 (T11-6), p53-binding protein (T1-52), T5-15 (KIAA1735), T5-13 (Sos1), T11-5 (hypothetical protein MGC4170), T11-9 (hypothetical protein AF225417), T11-3 (trap ankyrin repeat), T7-1 (KIAA1288), a mutant or wild type ras peptide, Homo sapiens telomerase ferment (hTRT), cytokeratin-19 (CYFRA21-1), squamous cell carcinoma antigen 1 (SCCA-1), protein T4-A, squamous cell carcinoma antigen 2 (SCCA-2), ovarian carcinoma antigen CA125 (1A1-3B) (KIAA0049), cell surface-associated MUCIN 1 (e.g., tumor-associated MUCIN, carcinoma-associated MUCIN, polymorphic epithelial MUCIN peanut-reactive urinary MUCIN, polymorphic epithelial mucin (PEM), PEMT, episialin, tumor-associated epithelial membrane antigen, epithelial membrane antigen (EMA), H23 antigen (H23AG), PUM, and breast carcinoma-associated antigen DF3), CTCL tumor antigen se1-1, CTCL tumor antigen se14-3, CTCL tumor antigen se20-4, CTCL tumor antigen se20-9, CTCL tumor antigen se33-1, CTCL tumor antigen se37-2, CTCL tumor antigen se57-1, CTCL tumor antigen se89-1, prostate-specific membrane antigen, 5T4 oncofetal trophoblast glycoprotein, Orf73 Kaposi's sarcoma-associated herpesvirus, colon cancer antigen NY-CO-45, lung cancer antigen NY-LU-12 variant A, cancer associated surface antigen, adenocarcinoma antigen ART1, paraneoplastic associated brain-testis-cancer antigen (onconeuronal antigen MA2; paraneoplastic neuronal antigen), neuro-oncological ventral antigen 2 (NOVA2), hepatocellular carcinoma antigen gene 520, tumor-associated antigen CO-029, tumor-associated antigen MAGE-X2, synovial sarcoma antigen, X breakpoint 2, squamous cell carcinoma antigen recognized by T cell, serologically defined colon cancer antigen 1, serologically defined breast cancer antigen NY-BR-15, serologically defined breast cancer antigen NY-BR-16, chromogranin A, parathyroid secretory protein 1, pancreatic cancer-associated antigen (DUPAN-2), carbohydrate antigen CA 19-9, carbohydrate antigen CA 72-4, carbohydrate antigen CA 195, and carcinoembryonic antigen (CEA).

In some embodiments, the tissue to be resected is an infected tissue, a necrotic tissue, or a diseased tissue. In some embodiments, the analyte can be associated with an infection, necrosis, inflammation, or disease. Non-limiting examples of such analytes are known in the art.

In some embodiments, the tissue to be resected is infected by a bacterium. In some embodiments, the tissue to be resected is infected by a virus. In some embodiments, the tissue to be resected is infected by a fungus. In some embodiments, the tissue to be resected is infected by a parasite or protozoa.

In some embodiments, the tissue to be resected is infected by a bacterium, e.g., a Bordetella pertussis, a Brucella abortis, a Escherichia coli, a Salmonella species, e.g., a Salmonella typhi, a Streptococci, a Vibrio (V. cholera, V. parahaemolyticus), a Shigella, a Pseudomonas, a Brucella species, a Klebsiella, a Mycobacteria species (a tuberculosis, an avium, a BCG, a leprosy), a Pneumococci, a Staphylococci, a Enterobacter species, a Clostridium tetani, a Bacillus anthracis, a Streptococcus pneumoniae, a Meningococcus A, B, C, Y, W, or W-135, a Helicobacter pylori, a Rochalimaea henselae, a Pasteurella (P. haemolytica, P. multocida), a Chlamydia (C. trachomatis, C. psittaci), a Treponema pallidum, a Haemophilus species, e.g., a Haemophilus influenza type b, a mycoplasma species, a Borrelia burgdorferi, a Legionella pneumophila, a Clostridium botulinum, a Corynebacterium diphtheriae, a Yersinia enterocolitica, a Ehrlichia, a Anaplasma, or a Coxiella burnetii bacterium.

In some embodiments, the tissue to be resected is infected by a parasite or protozoa, e.g., those causing malaria (Plasmodium falciparum, P. vivax, or P. malariae), a schistosome, a trypanosome, leishmania, a filarial nematode, Trichomonas vaginalis, a sarcocystis, a Taenia species (T. saginata or T. solium), Toxoplasma gondii, Trichinella spiralis, or an Eimeria species.

In some embodiments, the tissue to be resected is infected by a fungus, e.g., Cryptococcus neoformans, Candida albicans, Aspergillus fumigatus, Coccidioides immitis, or Coccidioides posadasii.

In some embodiments, the tissue to be resected is infected by a virus, e.g., a rotavirus, an aphthovirus (the agent for foot and mouth disease), an Ebola virus, a Hanta virus, a parainfluenza, a herpes virus species (e.g., herpes simplex virus, Epstein-Barr virus, chicken pox virus, pseudorabies, or cytomegalovirus), a rabies virus, a polio virus, a Hepatitis A, B, C or E, distemper, a Venezuelan equine encephalomyelitis virus, a feline leukemia virus, a reovirus, a respiratory syncytial virus, a Lassa fever virus, a polyoma virus, a canine parvovirus, a papilloma virus, a flavivirus, a tick borne encephalitis virus, a paramyxovirus (the agent for Rinderpest), a rhinovirus, an enterovirus, a Mengo virus, a paramyxovirus (mumps, measles, or respiratory syncytial virus), an avian infectious bronchitis virus, HTLV 1, HIV-1 or -2, or influenza virus A, B, or C, a lymphocytic choriomeningitis virus, a parvovirus, an adenovirus, a togavirus, a bovine respiratory syncytial virus, a coronavirus, or a Japanese Encephalitis virus.

In some embodiments, the methods provided herein comprise comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the size and site of a tissue to be resected from the subject based on the comparison. In some embodiments, the different location(s) in the tissue sample are reference location(s). In some embodiments, the reference location(s) in the tissue sample are locations of healthy tissue. In some embodiments, the reference location(s) in the tissue sample are locations of non-cancerous tissue. In some embodiments, the reference location(s) in the tissue sample are locations of non-tumor tissue. In some embodiments, the reference location(s) in the tissue sample are locations with no abnormalities such as tumor, cancer, necrosis, inflammation, infection, or disease.

In some embodiments, the presence of the analyte at the location in the tissue sample is significantly different from the presence of the analyte at the different location(s) in the tissue. In some embodiments, the presence of the analyte at the location in the tissue sample is significantly greater than the presence of the analyte at the different location(s) in the tissue sample. In some embodiments, the presence of the analyte at the location in the tissue sample is significantly less than the presence of the analyte at the different location(s) in the tissue sample.

In some embodiments, the location at the tissue sample is determined to be resected if the presence of the analyte at the location in the tissue sample is significantly different from the presence of the analyte at the different location(s). In some embodiments, the location at the tissue sample is determined to be resected if the presence of the analyte at the location in the tissue sample is significantly greater than the presence of the analyte at the different location(s). In some embodiments, the location at the tissue sample is determined to be resected if the presence of the analyte at the location in the tissue sample is significantly less than the presence of the analyte at the different location(s).

In some embodiments, the presence of the analyte at the location in the tissue sample is about 0.1-fold to about 100-fold (e.g., about 0.1-fold to about 90-fold, about 0.1-fold to about 80-fold, about 0.1-fold to about 70-fold, about 0.1-fold to about 60-fold, about 0.1-fold to about 50-fold, about 0.1-fold to about 40-fold, about 0.1-fold to about 30-fold, about 0.1-fold to about 20-fold, about 0.1-fold to about 15-fold, about 0.1-fold to about 10-fold, about 0.1-fold to about 8-fold, about 0.1-fold to about 6-fold, about 0.1-fold to about 5-fold, about 0.1-fold to about 4-fold, about 0.1-fold to about 3-fold, about 0.1-fold to about 2-fold, about 0.1-fold to about 1.5-fold, about 0.1-fold to about 1-fold, about 0.1-fold to about 0.8-fold, about 0.1-fold to about 0.6-fold, about 0.1-fold to about 0.4-fold, about 0.1-fold to about 0.2-fold, about 1-fold to about 100-fold, about 1-fold to about 90-fold, about 1-fold to about 80-fold, about 1-fold to about 70-fold, about 1-fold to about 60-fold, about 1-fold to about 50-fold, about 1-fold to about 40-fold, about 1-fold to about 30-fold, about 1-fold to about 20-fold, about 1-fold to about 15-fold, about 1-fold to about 10-fold, about 1-fold to about 8-fold, about 1-fold to about 6-fold, about 1-fold to about 5-fold, about 1-fold to about 4-fold, about 1-fold to about 3-fold, about 1-fold to about 2-fold, about 1-fold to about 1.5-fold, about 5-fold to about 100-fold, about 5-fold to about 90-fold, about 5-fold to about 80-fold, about 5-fold to about 70-fold, about 5-fold to about 60-fold, about 5-fold to about 50-fold, about 5-fold to about 40-fold, about 5-fold to about 30-fold, about 5-fold to about 20-fold, about 5-fold to about 15-fold, about 5-fold to about 10-fold, about 5-fold to about 8-fold, about 5-fold to about 6-fold, about 10-fold to about 100-fold, about 10-fold to about 90-fold, about 10-fold to about 80-fold, about 10-fold to about 70-fold, about 10-fold to about 60-fold, about 10-fold to about 50-fold, about 10-fold to about 40-fold, about 10-fold to about 30-fold, about 10-fold to about 20-fold, about 10-fold to about 15-fold, about 15-fold to about 100-fold, about 15-fold to about 90-fold, about 15-fold to about 80-fold, about 15-fold to about 70-fold, about 15-fold to about 60-fold, about 15-fold to about 50-fold, about 15-fold to about 40-fold, about 15-fold to about 30-fold, about 15-fold to about 20-fold, about 20-fold to about 100-fold, about 20-fold to about 90-fold, about 20-fold to about 80-fold, about 20-fold to about 70-fold, about 20-fold to about 60-fold, about 20-fold to about 50-fold, about 20-fold to about 40-fold, about 20-fold to about 30-fold, about 30-fold to about 40-fold, about 40-fold to about 100-fold, about 40-fold to about 90-fold, about 40-fold to about 80-fold, about 40-fold to about 70-fold, about 40-fold to about 60-fold, about 40-fold to about 50-fold, about 50-fold to about 100-fold, about 50-fold to about 90-fold, about 50-fold to about 80-fold, about 50-fold to about 70-fold, about 50-fold to about 60-fold, about 60-fold to about 100-fold, about 60-fold to about 90-fold, about 60-fold to about 80-fold, about 60-fold to about 70-fold, about 70-fold to about 100-fold, about 70-fold to about 90-fold, about 70-fold to about 80-fold, about 80-fold to about 100-fold, about 80-fold to about 90-fold, or about 90-fold to about 100-fold) greater than the presence of the analyte at the different location(s).

In some embodiments, the presence of the analyte at the location in the tissue sample is about 1% to about 99% (e.g., about 1% to about 95%, about 1% to about 90%, about 1% to about 85%, about 1% to about 80%, about 1% to about 75%, about 1% to about 70%, about 1% to about 65%, about 1% to about 60%, about 1% to about 55%, about 1% to about 50%, about 1% to about 45%, about 1% to about 40%, about 1% to about 35%, about 1% to about 30%, about 1% to about 25%, about 1% to about 20%, about 1% to about 15%, about 1% to about 10%, about 1% to about 5%, about 5% to about 99%, about 5% to about 95%, about 5% to about 90%, about 5% to about 85%, about 5% to about 80%, about 5% to about 75%, about 5% to about 70%, about 5% to about 65%, about 5% to about 60%, about 5% to about 55%, about 5% to about 50%, about 5% to about 45%, about 5% to about 40%, about 5% to about 35%, about 5% to about 30%, about 5% to about 25%, about 5% to about 20%, about 5% to about 15%, about 5% to about 10%, about 10% to about 99%, about 10% to about 95%, about 10% to about 90%, about 10% to about 85%, about 10% to about 80%, about 10% to about 75%, about 10% to about 70%, about 10% to about 65%, about 10% to about 60%, about 10% to about 55%, about 10% to about 50%, about 10% to about 45%, about 10% to about 40%, about 10% to about 35%, about 10% to about 30%, about 10% to about 25%, about 10% to about 20%, about 10% to about 15%, about 20% to about 99%, about 20% to about 95%, about 20% to about 90%, about 20% to about 85%, about 20% to about 80%, about 20% to about 75%, about 20% to about 70%, about 20% to about 65%, about 20% to about 60%, about 20% to about 55%, about 20% to about 50%, about 20% to about 45%, about 20% to about 40%, about 20% to about 35%, about 20% to about 30%, about 20% to about 25%, about 30% to about 99%, about 30% to about 95%, about 30% to about 90%, about 30% to about 85%, about 30% to about 80%, about 30% to about 75%, about 30% to about 70%, about 30% to about 65%, about 30% to about 60%, about 30% to about 55%, about 30% to about 50%, about 30% to about 45%, about 30% to about 40%, about 30% to about 35%, about 40% to about 99%, about 40% to about 95%, about 40% to about 90%, about 40% to about 85%, about 40% to about 80%, about 40% to about 75%, about 40% to about 70%, about 40% to about 65%, about 40% to about 60%, about 40% to about 55%, about 40% to about 50%, about 40% to about 45%, about 50% to about 99%, about 50% to about 95%, about 50% to about 90%, about 50% to about 85%, about 50% to about 80%, about 50% to about 75%, about 50% to about 70%, about 50% to about 65%, about 50% to about 60%, about 50% to about 55%, about 60% to about 99%, about 60% to about 95%, about 60% to about 90%, about 60% to about 85%, about 60% to about 80%, about 60% to about 75%, about 60% to about 70%, about 60% to about 65%, about 70% to about 99%, about 70% to about 95%, about 70% to about 90%, about 70% to about 85%, about 70% to about 80%, about 70% to about 75%, about 80% to about 99%, about 80% to about 95%, about 80% to about 90%, about 80% to about 85%, about 90% to about 99%, about 90% to about 95%, or about 95% to about 99%) decreased than the presence of the analyte at the different location(s).

In some embodiments, the presence of certain biomarkers associated with a cancer and/or disease (e.g., breast cancer biomarkers in ductal carcinoma) at a location in a tissue sample are evaluated. If the presence of certain biomarkers associated with a cancer and/or disease are below a threshold value for those biomarkers, the location in the tissue sample is considered “clear.” If the presence of certain biomarkers associated with a cancer and/or disease are above a threshold value for those biomarkers, the location in the tissue sample is considered within the margin of tissue to be resected.

In some embodiments, the method further comprises comparing presence of one or more additional analyte(s) at the location in the tissue sample with the presence of the one or more additional analyte(s) at the different location(s) in the tissue sample. In some embodiments, the presence of a total of about 1 to about 20,000 (e.g., about 1 to about 18,000, about 1 to about 16,000, about 1 to about 14,000, about 1 to about 12,000, about 1 to about 10,000, about 1 to about 9,000, about 1 to about 8,000, about 1 to about 7,000, about 1 to about 6,000, about 1 to about 5,000, about 1 to about 4,500, about 1 to about 4,000, about 1 to about 3,500, about 1 to about 3,000, about 1 to about 2,500, about 1 to about 2,000, about 1 to about 1,500, about 1 to about 1,000, about 1 to about 800, about 1 to about 600, about 1 to about 500, about 1 to about 400, about 1 to about 300, about 1 to about 200, about 1 to about 100, about 1 to about 50, about 1 to about 20, about 1 to about 10, about 1 to about 5, about 50 to about 20,000, about 50 to about 18,000, about 50 to about 16,000, about 50 to about 14,000, about 50 to about 12,000, about 50 to about 10,000, about 50 to about 9,000, about 50 to about 8,000, about 50 to about 7,000, about 50 to about 6,000, about 50 to about 5,000, about 50 to about 4,500, about 50 to about 4,000, about 50 to about 3,500, about 50 to about 3,000, about 50 to about 2,500, about 50 to about 2,000, about 50 to about 1,500, about 50 to about 1,000, about 50 to about 800, about 50 to about 600, about 50 to about 500, about 50 to about 400, about 50 to about 300, about 50 to about 200, about 50 to about 100, about 100 to about 20,000, about 100 to about 18,000, about 100 to about 16,000, about 100 to about 14,000, about 100 to about 12,000, about 100 to about 10,000, about 100 to about 9,000, about 100 to about 8,000, about 100 to about 7,000, about 100 to about 6,000, about 100 to about 5,000, about 100 to about 4,500, about 100 to about 4,000, about 100 to about 3,500, about 100 to about 3,000, about 100 to about 2,500, about 100 to about 2,000, about 100 to about 1,500, about 100 to about 1,000, about 100 to about 800, about 100 to about 600, about 100 to about 500, about 100 to about 400, about 100 to about 300, about 100 to about 200, about 500 to about 20,000, about 500 to about 18,000, about 500 to about 16,000, about 500 to about 14,000, about 500 to about 12,000, about 500 to about 10,000, about 500 to about 9,000, about 500 to about 8,000, about 500 to about 7,000, about 500 to about 6,000, about 500 to about 5,000, about 500 to about 4,500, about 500 to about 4,000, about 500 to about 3,500, about 500 to about 3,000, about 500 to about 2,500, about 500 to about 2,000, about 500 to about 1,500, about 500 to about 1,000, about 500 to about 800, about 500 to about 600, about 1,000 to about 20,000, about 1,000 to about 18,000, about 1,000 to about 16,000, about 1,000 to about 14,000, about 1,000 to about 12,000, about 1,000 to about 10,000, about 1,000 to about 9,000, about 1,000 to about 8,000, about 1,000 to about 7,000, about 1,000 to about 6,000, about 1,000 to about 5,000, about 1,000 to about 4,500, about 1,000 to about 4,000, about 1,000 to about 3,500, about 1,000 to about 3,000, about 1,000 to about 2,500, about 1,000 to about 2,000, about 1,000 to about 1,500, about 1,500 to about 20,000, about 2,000 to about 20,000, about 2,000 to about 18,000, about 2,000 to about 16,000, about 2,000 to about 14,000, about 2,000 to about 12,000, about 2,000 to about 10,000, about 2,000 to about 9,000, about 2,000 to about 8,000, about 2,000 to about 7,000, about 2,000 to about 6,000, about 2,000 to about 5,000, about 2,000 to about 4,500, about 2,000 to about 4,000, about 2,000 to about 3,500, about 2,000 to about 3,000, about 2,000 to about 2,500, about 5,000 to about 20,000, about 5,000 to about 18,000, about 5,000 to about 16,000, about 5,000 to about 14,000, about 5,000 to about 12,000, about 5,000 to about 10,000, about 5,000 to about 9,000, about 5,000 to about 8,000, about 5,000 to about 7,000, about 5,000 to about 6,000, about 10,000 to about 20,000, about 10,000 to about 18,000, about 10,000 to about 16,000, about 10,000 to about 14,000, about 10,000 to about 12,000, about 12,000 to about 20,000, about 12,000 to about 18,000, about 12,000 to about 16,000, about 12,000 to about 14,000, about 14,000 to about 20,000, about 14,000 to about 18,000, about 14,000 to about 16,000, about 16,000 to about 20,000, about 16,000 to about 18,000, or about 18,000 to about 20,000) analyte(s) at the location are compared to the presence of the analyte(s) at the different location(s).

In some embodiments of any one of the methods described herein, mutant cells are identified according to the presence of the one or more analyte(s) at the location in the tissue sample. In some embodiments, a mutant cell is identified according to the presence of one or more biomarkers described herein. In some embodiments, a mutant cell is identified according to the presence of one or more cell-surface biomarkers, e.g., a cell-surface receptor, at the location in the tissue sample.

In some embodiments, a cell within a location at the tissue sample is identified as a mutant cell if the presence of the one or more analyte(s) at the location in the tissue sample are significantly different from the presence of the analyte(s) at the different location(s). In some embodiments, a cell within a location at the tissue sample is identified as a mutant cell if the presence of the one or more analyte(s) at the location in the tissue sample are significantly greater than the presence of the analyte(s) at the different location(s). In some embodiments, the mutant cell(s) within the location at the tissue sample is determined to be resected if the presence of the analyte(s) at the location in the tissue sample are significantly less than the presence of the analyte at the different location(s).

In some embodiments, a location at the tissue sample comprises about 1 to about 100,000 (e.g., about 1 to about 90,000, about 1 to about 80,000, about 1 to about 70,000, about 1 to about 60,000, about 1 to about 50,000, about 1 to about 40,000, about 1 to about 30,000, about 1 to about 20,000, about 1 to about 10,000, about 1 to about 9,000, about 1 to about 8,000, about 1 to about 7,000, about 1 to about 6,000, about 1 to about 5,000, about 1 to about 4,000, about 1 to about 3,000, about 1 to about 2,000, about 1 to about 1,000, about 1 to about 900, about 1 to about 800, about 1 to about 700, about 1 to about 600, about 1 to about 500, about 1 to about 400, about 1 to about 300, about 1 to about 200, about 1 to about 100, about 1 to about 90, about 1 to about 80, about 1 to about 70, about 1 to about 60, about 1 to about 50, about 1 to about 40, about 1 to about 30, about 1 to about 20, about 1 to about 10, about 100 to about 100,000, about 100 to about 90,000, about 100 to about 80,000, about 100 to about 70,000, about 100 to about 60,000, about 100 to about 50,000, about 100 to about 40,000, about 100 to about 30,000, about 100 to about 20,000, about 100 to about 10,000, about 100 to about 9,000, about 100 to about 8,000, about 100 to about 7,000, about 100 to about 6,000, about 100 to about 5,000, about 100 to about 4,000, about 100 to about 3,000, about 100 to about 2,000, about 100 to about 1,000, about 100 to about 900, about 100 to about 800, about 100 to about 700, about 100 to about 600, about 100 to about 500, about 100 to about 400, about 100 to about 300, about 100 to about 200, about 1,000 to about 100,000, about 1,000 to about 90,000, about 1,000 to about 80,000, about 1,000 to about 70,000, about 1,000 to about 60,000, about 1,000 to about 50,000, about 1000 to about 40,000, about 1,000 to about 30,000, about 1,000 to about 20,000, about 1,000 to about 10,000, about 1000 to about 9,000, about 1,000 to about 8,000, about 1,000 to about 7,000, about 1000 to about 6,000, about 1,000 to about 5,000, about 1,000 to about 4,000, about 1000 to about 3,000, about 1,000 to about 2,000, 10,000 to about 100,000, about 10,000 to about 90,000, about 10,000 to about 80,000, about 10,000 to about 70,000, about 10,000 to about 60,000, about 10000 to about 50,000, about 10,000 to about 40,000, about 10,000 to about 30,000, about 10,000 to about 20,000) cells.

In some embodiments of any one of the methods described herein, the tissue sample can be obtained from any suitable tissue or organ from the subject (e.g., breast tissue, muscle tissue, gland tissue, fat or adipose tissue, nerve tissue, joint tissue, ligament tissue, tendon tissue, mouth tissue, tongue tissue, salivary gland tissue, parotid gland tissue, submandibular gland tissue, sublingual gland tissue, pharynx tissue, esophageal tissue, stomach tissue, small intestine tissue, duodenum tissue, jejunum tissue, ileum tissue, large intestine tissue, liver tissue, gallbladder tissue, mesentery tissue, pancreas tissue, anal canal tissue, anus tissue, nasal cavity tissue, pharynx tissue, larynx tissue, trachea tissue, bronchi tissue, lung tissue, diaphragm tissue, kidney tissue, ureter tissue, bladder tissue, urethra tissue, ovarian tissue, fallopian tube tissue, uterus tissue, vagina tissue, vulva tissue, clitoris tissue, testes tissue, epididymis tissue, vas deferens tissue, seminal vesicles tissue, prostate tissue, bulbourethral gland tissue, external reproductive organ tissue, penis tissue, scrotum tissue, brain tissue, pituitary gland tissue, pineal gland tissue, thyroid gland tissue, parathyroid gland tissue, adrenal gland tissue, pancreas tissue, heart tissue, patent foramen ovale tissue, artery tissue, vein tissue, capillary tissue, lymphatic vessel tissue, lymph node tissue, bone tissue, thymus tissue, spleen tissue, gut-associated lymphoid tissue, tonsil tissue, interstitium tissue, cerebrum tissue, cerebral hemisphere tissue, diencephalon tissue, brainstem tissue, midbrain tissue, pons tissue, medulla oblongata tissue, cerebellum tissue, spinal cord tissue, ventricular system tissue, choroid plexus tissue, nerve tissue, cranial nerve tissue, spinal nerve tissue, Anglia tissue, enteric nervous system tissue, eye tissue, a cornea tissue, iris tissue, ciliary body tissue, lens tissue, retina tissue, ear tissue, outer ear tissue, earlobe tissue, eardrum tissue, middle ear tissue, ossicles tissue, inner ear tissue, cochlea tissue, vestibule tissue, semicircular canal tissue, olfactory epithelium tissue, tongue tissue, taste bud tissue, mammary gland tissue, skin tissue, subcutaneous tissue, and milk duct tissue). In some embodiments, the tissue sample can include or be proximal in the body of the subject to a nerve, a blood vessel, and/or a lymph vessel.

The spatial barcode of the capture probe can be any spatial barcode described herein.

In some embodiments of any of the methods described herein, the array can be any of the types of arrays described herein. For example, the array comprises a slide. In some embodiments, the capture probe is attached to the slide (e.g., by its 5′ end).

In some embodiments of any of the methods described herein, the array is a bead array. In some embodiments, a 5′ end of the capture probe is attached to a bead of the bead array.

In some embodiments of any of the methods described herein, the method comprises extending a 3′ end of the capture probe using the specifically bound analyte or analyte binding agent barcode as a template to generate an extended capture probe.

In some embodiments, additional methods are used in combination with the methods described herein to determine the site and size of the tissue to be resected in a subject. In some embodiments, medical imaging modalities such as computed tomography (CT) and magnetic resonance imaging (MRI) are used in combination with the methods described herein. In some embodiments, a position emission tomography (PET) is used in combination with the methods described herein. For example, an initial scanning of a cancer patient and/or imaging of a tissue sample from a cancer patient can be performed using, e.g., MRI, CT, and/or PET prior to the methods described herein, and a preliminary assessment of a surgical margin can be performed. The initial information can provide guidance on, e.g., where to obtain the tissue sample for use in the methods described herein, the size of the tissue sample, and/or the number of tissue samples needed. In another example, a follow-up scanning and/or imaging can be performed using e.g., MRI, CT, and/or PET after the methods described herein are performed. The follow-up scanning and/or imaging provide information on, e.g., the clearance of the cancerous and/or diseased tissue, and whether there are residual cancerous and/or diseased tissue. Any other suitable methods known in the art can also be used in combination with the methods described herein.

Some embodiments of any of the methods described herein can further include obtaining the tissue sample from the subject (e.g., obtain a biopsy from the subject).

In some embodiments of any of the methods described herein, at least a portion of the tissue to be resected includes cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and/or diseased tissue. In some embodiments, at least 80%, at least 85%, at least 90%, at least 95%, at least 99%, or 100% of the tissue to be resected includes one or more of cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and disease tissue.

(b) Methods of Treating a Subject by Resecting Tissue

Also provided herein are methods of treating a subject in need thereof that include: (a) contacting a tissue sample obtained from the subject to an array comprising a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises (i) a capture domain that specifically binds to an analyte of the tissue sample and (ii) a spatial barcode; (b) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (c) comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at a different location in the tissue sample, and determining the surgical margin based on the comparison; and (d) resecting tissue from the subject using the surgical margin determined in step (c).

A method of treating a subject, the method comprising: resecting tissue from the subject using a surgical margin previously determined using a method comprising the steps of: (a) contacting a tissue sample obtained from the subject to an array comprising a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises (i) a capture domain that specifically binds to an analyte of the tissue sample and (ii) a spatial barcode; (b) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (c) comparing the presence of the analyte at the location in the tissue sample to the presence of the analyte at a different location in the tissue sample, and determining the surgical margin based on the comparison.

For example, when a clinician practices the method, the data obtained can provide the clinician with information on the accurate location of the cancerous or diseased tissue, therefore provide the accurate surgical margin of the tissue to be resected. Using the information of the accurate surgical margin provided by the method described herein, the clinician is able to achieve, e.g., more complete resection, thereby treating the subject.

In some embodiments, the analyte is a DNA or RNA. In some embodiments, the analyte is a messenger RNA (mRNA) molecule. In some embodiments, the analyte is a genomic DNA. In some embodiments, the analyte comprises a full-length sequence of a biomarker described herein. In some embodiments, the analyte comprises a fragment of the sequence of a biomarker described herein. In some embodiments of any of the methods described herein, each of the plurality of capture probes comprises (i) a capture domain that binds specifically to an analyte of the tissue sample and (ii) a spatial barcode. The capture probe can be any capture probe described herein. In some embodiments, the capture domain of the capture probe comprises a sequence that is substantially complementary (e.g., at least 80%, at least 85%, at least 90%, at least 95%, at least 99%, or 100% complementary) to a portion of the sequence of the analyte of the tissue sample. In some embodiments, the capture domain can have a total of about 10 nucleotides to about 125 nucleotides (or any of the subranges of this range described herein). In some embodiments, the sequence that is substantially complementary to a portion of the sequence of the analyte can be a random sequence. In some embodiments, the sequence that is substantially complementary to a portion of the sequence of the analyte can include a poly(T) oligonucleotide sequence (e.g., at least 5 contiguous Ts, at least 10 contiguous Ts, or at least 15 contiguous Ts).

In some embodiments of any of the methods described herein, step (b) comprises sequencing (i) all or a part of the nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof. In some embodiments, the sequencing is high throughput sequencing, sequencing by hybridization, or any of the other methods for sequencing described herein or known in the art. For example, sequencing can involve one or more of nucleic acid amplification, the ligation or addition of one or more sequencing adaptors, cleavage of the capture probe from the array, extension of the capture probe using the bound cDNA as a template, and generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe. Non-limiting methods for determining the sequence of (i) all or a part of the sequence of the target nucleic acid, or a complement thereof, or (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode, or a complement thereof, are described herein or are known in the art.

Also provided herein are methods of treating a subject that include: (a) contacting a tissue sample obtained from the subject to a plurality of analyte capture agents, wherein an analyte capture agent of the plurality of analyte capture agents comprises an analyte binding moiety barcode, an analyte capture sequence, and an analyte binding moiety that binds specifically to an analyte; (b) disposing the tissue sample onto an array, wherein the array comprises a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises a spatial barcode and a capture domain that binds specifically to the analyte capture sequence; (c) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte binding moiety barcode or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (d) comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the surgical margin based on the comparison; and (e) resecting tissue from the subject using the surgical margin determined in step (d).

Also provided herein are methods of treating a subject, the method comprising: resecting tissue from the subject using a surgical margin previously determined using a method comprising the steps of: (a) contacting a tissue sample obtained from the subject to a plurality of analyte capture agents, wherein an analyte capture agent of the plurality of analyte capture agents comprises an analyte binding moiety barcode, an analyte capture sequence, and an analyte binding moiety that binds specifically to an analyte; (b) disposing the tissue sample onto an array, wherein the array comprises a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises a spatial barcode and a capture domain that binds specifically to the analyte capture sequence; (c) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte binding moiety barcode or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (d) comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the surgical margin based on the comparison.

In some embodiments, the analyte is a protein. In some embodiments, the analyte is a full-length protein. In some embodiments, the analyte is a fragment of a protein. In some embodiments, the analyte is a byproduct of a protein. In some embodiments, the protein is any of the exemplary cancer biomarkers described herein.

In some embodiments of any of the methods described herein, each of the plurality of analyte capture agents comprises an analyte binding moiety barcode, an analyte capture sequence, and an analyte binding moiety that binds specifically to an analyte. In some embodiments, the analyte binding moiety is an antibody or an antigen-binding antibody fragment (e.g., a Fab). Any other suitable protein binding moiety known in the art can also be used as an analyte binding moiety. In some embodiments, the analyte binding moiety barcode can be any barcode described herein. In some embodiments, the analyte capture sequence can be any analyte capture sequence described herein. In some embodiments of any of the methods described herein, each of the plurality of capture probes comprises a spatial barcode and a capture domain that binds specifically to the analyte capture sequence. The capture probe can be any capture probe described herein. In some embodiments, the capture domain of the capture probe comprises a sequence that is substantially complementary (e.g., at least 80%, at least 85%, at least 90%, at least 95%, at least 99%, or 100% complementary) to a portion of the analyte capture sequence. In some embodiments, the capture domain can have a total of about 10 nucleotides to about 125 nucleotides (or any of the subranges of this range described herein). In some embodiments, the sequence that is substantially complementary to a portion of the analyte capture sequence can be a random sequence. In some embodiments, the sequence that is substantially complementary to a portion of the analyte capture sequence can include a poly(T) oligonucleotide sequence (e.g., at least 5 contiguous Ts, at least 10 contiguous Ts, or at least 15 contiguous Ts).

In some embodiments, the determining of the sequence is by sequencing. In some embodiments, the sequencing is high throughput sequencing, sequencing by hybridization, or any of the other methods for sequencing described herein or known in the art. For example, sequencing can involve one or more of nucleic acid amplification, the ligation or addition of one or more sequencing adaptors, cleavage of the capture probe from the array, extension of the capture probe using the bound analyte capture sequence as a template, and generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe. Non-limiting methods for determining the sequence of (i) all or a part of the nucleic acid sequence corresponding to the analyte binding moiety barcode, or a complement thereof, or (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode, or a complement thereof, are described herein or are known in the art.

In some embodiments, the resected tissue is or comprises a tumor (e.g., a malignant or a benign tumor). In some embodiments, the tumor is a solid tumor. In some embodiments, the subject is suspected of having a cancer. In some embodiments, the subject has been previously diagnosed or identified as having a cancer (e.g., any of the exemplary cancers described herein).

In some embodiments, the resected tissue can include a tumor, (e.g., a malignant tumor) of any of the types of cancer describes herein.

In some embodiments, the analyte is a tumor biomarker. In some embodiments, the analyte is a tumor antigen. Exemplary tumor antigens include, but are not limited to, any of the exemplary tumor antigens described herein.

In some embodiments, the resected tissue is or comprises an infected tissue, a necrotic tissue, or a diseased tissue. In some embodiments, the analyte can be associated with an infection, necrosis, inflammation, or disease. Non-limiting examples of such analytes are known in the art.

In some embodiments, the resected tissue is infected by a bacterium (e.g., any of the exemplary bacteria described herein), a parasite or protozoa (e.g., any of the exemplary parasites or protozoa described herein), a fungus (e.g., any of the exemplary fungi described herein), or a virus (e.g., any of the exemplary viruses described herein).

In some embodiments, the methods provided herein comprise comparing the presence of the analyte at the location in the tissue sample to the presence of the analyte at different location(s) in the tissue sample, and determining the size and site of a tissue to be resected from the subject based on the comparison. In some embodiments, the different location(s) in the tissue sample are reference location(s). In some embodiments, the reference location(s) in the tissue sample are locations of healthy tissue. In some embodiments, the reference location(s) in the tissue sample are locations of non-cancerous tissue. In some embodiments, the reference location(s) in the tissue sample are locations of non-tumor tissue. In some embodiments, the reference location(s) in the tissue sample are locations with no abnormalities such as tumor, cancer, necrosis, inflammation, infection, or disease.

In some embodiments, the presence of the analyte at the location in the tissue sample is significantly different from the presence of the analyte at the different location(s) in the tissue. In some embodiments, the presence of the analyte at the location in the tissue sample is significantly greater than the presence of the analyte at the different location(s) in the tissue sample. In some embodiments, the presence of the analyte at the location in the tissue sample is significantly less than the presence of the analyte at the different location(s) in the tissue sample.

In some embodiments, the location at the tissue sample is determined to be resected if the presence of the analyte at the location in the tissue sample is significantly different from the presence of the analyte at the different location(s). In some embodiments, the location at the tissue sample is determined to be resected if the presence of the analyte at the location in the tissue sample is significantly greater than the presence of the analyte at the different location(s). In some embodiments, the location at the tissue sample is determined to be resected if the presence of the analyte at the location in the tissue sample is significantly less than the presence of the analyte at the different location(s).

In some embodiments, the presence of the analyte at the location in the tissue sample is about 0.1-fold to about 100-fold (e.g., or any of the subranges of this range described herein) greater than the presence of the analyte at the different location(s).

In some embodiments, the presence of the analyte at the location in the tissue sample is about 1% to about 99% (e.g., or any of the subranges of this range described herein) decreased than the presence of the analyte at the different location(s).

In some embodiments, the presence of certain biomarkers associated with a cancer and/or disease (e.g., breast cancer biomarkers in ductal carcinoma) at a location in a tissue sample are evaluated. If the presence of certain biomarkers associated with a cancer and/or disease are below a threshold value for those biomarkers, the location in the tissue sample is considered “clear.” If the presence of certain biomarkers associated with a cancer and/or disease are above a threshold value for those biomarkers, the location in the tissue sample is considered within the margin of tissue to be resected.

In some embodiments, the method further comprises comparing the presence of one or more additional analyte(s) at the location in the tissue sample with the presence of the one or more additional analyte(s) at the different location(s) in the tissue sample. In some embodiments, the presence of a total of about 1 to about 20,000 (e.g., or any of the subranges of this range described herein) analyte(s) at the location are compared to the presence of the analyte(s) at the different location(s).

In some embodiments of any one of the methods described herein, mutant cells are identified according to the presence of the one or more analyte(s) at the location in the tissue sample. In some embodiments, a mutant cell is identified according to the presence of one or more biomarkers described herein. In some embodiments, a mutant cell is identified according to the presence of one or more cell-surface biomarkers, e.g., a cell-surface receptor, at the location in the tissue sample.

In some embodiments, a cell within a location at the tissue sample is identified as a mutant cell if the presence of the one or more analyte(s) at the location in the tissue sample are significantly different from the presence of the analyte(s) at the different location(s). In some embodiments, a cell within a location at the tissue sample is identified as a mutant cell if the presence of the one or more analyte(s) at the location in the tissue sample are significantly greater than the presence of the analyte(s) at the different location(s). In some embodiments, the mutant cell(s) within the location at the tissue sample is determined to be resected if the presence of the analyte(s) at the location in the tissue sample are significantly less than the presence of the analyte at the different location(s).

In some embodiments, a location at the tissue sample comprises about 1 to about 100,000 cells.

The spatial barcode of the capture probe can be any spatial barcode described herein.

In some embodiments of any of the methods described herein, the array can be any of the types of arrays described herein. For example, the array comprises a slide. In some embodiments, the capture probe is attached to the slide (e.g., by its 5′ end).

In some embodiments of any of the methods described herein, the array is a bead array. In some embodiments, a 5′ end of the capture probe is attached to a bead of the bead array.

In some embodiments of any of the methods described herein, the method comprises extending a 3′ end of the capture probe using the specifically bound analyte or analyte binding agent barcode as a template to generate an extended capture probe.

In some embodiments, additional methods are used in combination with the methods described herein to determine the site and size of the tissue to be resected in a subject. In some embodiments, medical imaging modalities such as computed tomography (CT) and magnetic resonance imaging (MRI) are used in combination with the methods described herein. In some embodiments, a position emission tomography (PET) is used in combination with the methods described herein. For example, an initial scanning of a cancer patient and/or imaging of a tissue sample from a cancer patient can be performed using, e.g., MRI, CT, and/or PET prior to the methods described herein, and a preliminary assessment of a surgical margin can be performed. The initial information can provide guidance on, e.g., where to obtain the tissue sample for use in the methods described herein, the size of the tissue sample, and/or the number of tissue samples needed. In another example, a follow-up scanning and/or imaging can be performed using e.g., MRI, CT, and/or PET after the methods described herein are performed. The follow-up scanning and/or imaging provide information on, e.g., the clearance of the cancerous and/or diseased tissue, and whether there are residual cancerous and/or diseased tissue. Any other suitable methods known in the art can also be used in combination with the methods described herein.

Some embodiments of any of the methods described herein can further include obtaining the tissue sample from the subject (e.g., obtain a biopsy sample from the subject).

In some embodiments of any of the methods described herein, at least a portion of the resected tissue includes cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and/or diseased tissue. In some embodiments, at least 80%, at least 85%, at least 90%, at least 95%, at least 99%, or 100% of the resected tissue includes one or more of cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and disease tissue.

In some embodiments, the tissue resection is considered successful when less than 20%, less than 15%, less than 10%, less than 5%, or zero cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and/or diseased tissue are detected post-resection as compared to the identified cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and/or diseased tissue prior to the resection.

In some embodiments, the treatment is considered successful when less than 20%, less than 15%, less than 10%, less than 5%, or zero cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and/or diseased tissue are detected post-resection as compared to the identified cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and/or diseased tissue prior to the resection.

In some embodiments of any of the methods described herein, the surgical margin can be the margin between the location(s) of one or more of cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and disease tissue, and the location(s) of healthy or normal tissue, in a subject.

(c) Methods of Identifying a Surgical Margin of a Tissue to be Resected

Provided herein are methods of identifying a surgical margin of a tissue to be resected in a subject, the method comprising: (a) contacting a tissue sample obtained from the subject to an array comprising a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises (i) a capture domain that specifically binds to an analyte of the tissue sample and (ii) a spatial barcode; (b) determining (i) all or a part of the nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (c) comparing the presence of the analyte at the location in the tissue sample to the presence of the analyte at different location(s) in the tissue sample, and determining a surgical margin of a tissue to be resected from the subject based on the comparison. In some embodiments, the analyte is a DNA or RNA. In some embodiments, the analyte is a messenger RNA (mRNA) molecule. In some embodiments, the analyte is a genomic DNA. In some embodiments, the analyte comprises a full-length sequence of a biomarker described herein. In some embodiments, the analyte comprises a fragment of the sequence of a biomarker described herein. In some embodiments of any of the methods described herein, each of the plurality of capture probes comprises (i) a capture domain that binds specifically to an analyte of the tissue sample and (ii) a spatial barcode. The capture probe can be any capture probe described herein. In some embodiments, the capture domain of the capture probe comprises a sequence that is substantially complementary (e.g., at least 80%, at least 85%, at least 90%, at least 95%, at least 99%, or 100% complementary) to a portion of the sequence of the analyte of the tissue sample. In some embodiments, the capture domain can have a total of about 10 nucleotides to about 125 nucleotides (or any of the subranges of this range described herein). In some embodiments, the sequence that is substantially complementary to a portion of the sequence of the analyte can be a random sequence. In some embodiments, the sequence that is substantially complementary to a portion of the sequence of the analyte can include a poly(T) oligonucleotide sequence (e.g., at least 5 contiguous Ts, at least 10 contiguous Ts, or at least 15 contiguous Ts).

In some embodiments of any of the methods described herein, step (b) comprises sequencing (i) all or a part of the nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof. In some embodiments, the sequencing is high throughput sequencing, sequencing by hybridization, or any of the other methods for sequencing described herein or known in the art. For example, sequencing can involve one or more of nucleic acid amplification, the ligation or addition of one or more sequencing adaptors, cleavage of the capture probe from the array, extension of the capture probe using the bound cDNA as a template, and generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe. Non-limiting methods for determining the sequence of (i) all or a part of the sequence of the target nucleic acid, or a complement thereof, or (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode, or a complement thereof, are described herein or are known in the art.

Provided herein are methods of identifying a surgical margin of a tissue to be resected in a subject that include: (a) contacting a tissue sample obtained from the subject to a plurality of analyte capture agents, where an analyte capture agent of the plurality of analyte capture agents comprises an analyte binding moiety barcode, an analyte capture sequence, and an analyte binding moiety that binds specifically to an analyte; (b) disposing the tissue sample onto an array, wherein the array comprises a plurality of capture probes, where a capture probe of the plurality of capture probes comprises a spatial barcode and a capture domain that binds specifically to the analyte capture sequence; (c) determining (i) all or a part of the nucleic acid sequence corresponding to the analyte binding moiety barcode or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (d) comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining a surgical margin of a tissue to be resected from the subject based on the comparison. In some embodiments, the analyte is a protein. In some embodiments, the analyte is a full-length protein. In some embodiments, the analyte is a fragment of a protein. In some embodiments, the analyte is a byproduct of a protein. In some embodiments, the protein is any of the exemplary cancer biomarkers described herein.

In some embodiments of any of the methods described herein, each of the plurality of analyte capture agents comprises an analyte binding moiety barcode, an analyte capture sequence, and an analyte binding moiety that binds specifically to an analyte. In some embodiments, the analyte binding moiety is an antibody or an antigen-binding antibody fragment (e.g., a Fab). Any other suitable protein binding moiety known in the art can also be used as an analyte binding moiety. In some embodiments, the analyte binding moiety barcode can be any barcode described herein. In some embodiments, the analyte capture sequence can be any analyte capture sequence described herein. In some embodiments of any of the methods described herein, each of the plurality of capture probes comprises a spatial barcode and a capture domain that binds specifically to the analyte capture sequence. The capture probe can be any capture probe described herein. In some embodiments, the capture domain of the capture probe comprises a sequence that is substantially complementary (e.g., at least 80%, at least 85%, at least 90%, at least 95%, at least 99%, or 100% complementary) to a portion of the analyte capture sequence. In some embodiments, the capture domain can have a total of about 10 nucleotides to about 125 nucleotides (or any of the subranges of this range described herein). In some embodiments, the sequence that is substantially complementary to a portion of the analyte capture sequence can be a random sequence. In some embodiments, the sequence that is substantially complementary to a portion of the analyte capture sequence can include a poly(T) oligonucleotide sequence (e.g., at least 5 contiguous Ts, at least 10 contiguous Ts, or at least 15 contiguous Ts).

In some embodiments, the determining of the sequence is by sequencing. In some embodiments, the sequencing is high throughput sequencing, sequencing by hybridization, sequencing by ligation or any of the other methods for sequencing described herein or known in the art. For example, sequencing can involve one or more of nucleic acid amplification, the ligation or addition of one or more sequencing adaptors, cleavage of the capture probe from the array, extension of the capture probe using the bound analyte capture sequence as a template, and generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe. Non-limiting methods for determining the sequence of (i) all or a part of the nucleic acid sequence corresponding to the analyte binding moiety barcode, or a complement thereof, or (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode, or a complement thereof, are described herein or are known in the art.

In some embodiments, the tissue to be resected is or comprises a tumor (e.g., a malignant or a benign tumor). In some embodiments, the tumor is a solid tumor. In some embodiments, the subject is suspected of having a cancer. In some embodiments, the subject has been previously diagnosed or identified as having a cancer (e.g., any of the exemplary cancers described herein).

In some embodiments, the tissue to be resected can include a tumor (e.g., a malignant tumor) of any of the types of cancer describes herein.

In some embodiments, the analyte is a tumor biomarker. In some embodiments, the analyte is a tumor antigen. Exemplary tumor antigens include, but are not limited to, any of the exemplary tumor antigens described herein.

In some embodiments, the tissue to be resected is or comprises an infected tissue, a necrotic tissue, or a diseased tissue. In some embodiments, the analyte can be associated with an infection, necrosis, inflammation, or disease. Non-limiting examples of such analytes are known in the art.

In some embodiments, the tissue to be resected is infected by a bacterium (e.g., any of the exemplary bacteria described herein), a parasite or protozoa (e.g., any of the exemplary parasites or protozoa described herein), a fungus (e.g., any of the exemplary fungi described herein), or a virus (e.g., any of the exemplary viruses described herein).

In some embodiments, the methods provided herein comprise comparing the presence of the analyte at the location in the tissue sample to the presence of the analyte at different location(s) in the tissue sample, and determining the size and site of a tissue to be resected from the subject based on the comparison. In some embodiments, the different location(s) in the tissue sample are reference location(s). In some embodiments, the reference location(s) in the tissue sample are locations of healthy tissue. In some embodiments, the reference location(s) in the tissue sample are locations of non-cancerous tissue. In some embodiments, the reference location(s) in the tissue sample are locations of non-tumor tissue. In some embodiments, the reference location(s) in the tissue sample are locations with no abnormalities such as tumor, cancer, necrosis, inflammation, infection, or disease.

In some embodiments, the presence of the analyte at the location in the tissue sample is significantly different from the presence of the analyte at the different location(s) in the tissue. In some embodiments, the presence of the analyte at the location in the tissue sample is significantly greater than the presence of the analyte at the different location(s) in the tissue sample. In some embodiments, the presence of the analyte at the location in the tissue sample is significantly less than the presence of the analyte at the different location(s) in the tissue sample.

In some embodiments, the location at the tissue sample is determined to be resected if the presence of the analyte at the location in the tissue sample is significantly different from the presence of the analyte at the different location(s). In some embodiments, the location at the tissue sample is determined to be resected if the presence of the analyte at the location in the tissue sample is significantly greater than the presence of the analyte at the different location(s). In some embodiments, the location at the tissue sample is determined to be resected if the presence of the analyte at the location in the tissue sample is significantly less than the presence of the analyte at the different location(s).

In some embodiments, the presence of the analyte at the location in the tissue sample is about 0.1-fold to about 100-fold (e.g., or any of the subranges of this range described herein) greater than the presence of the analyte at the different location(s).

In some embodiments, the presence of the analyte at the location in the tissue sample is about 1% to about 99% (e.g., or any of the subranges of this range described herein) decreased than the presence of the analyte at the different location(s).

In some embodiments, the presence of certain biomarkers associated with a cancer and/or disease (e.g., breast cancer biomarkers in ductal carcinoma) at a location in a tissue sample are evaluated. If the presence of certain biomarkers associated with a cancer and/or disease are below a threshold value for those biomarkers, the location in the tissue sample is considered “clear.” If the presence of certain biomarkers associated with a cancer and/or disease are above a threshold value for those biomarkers, the location in the tissue sample is considered within the margin of tissue to be resected.

In some embodiments, the method further comprises comparing presence of one or more additional analyte(s) at the location in the tissue sample with the presence of the one or more additional analyte(s) at the different location(s) in the tissue sample. In some embodiments, the presence of a total of about 1 to about 20,000 (e.g., or any of the subranges of this range described herein) analyte(s) at the location are compared to the presence of the analyte(s) at the different location(s).

In some embodiments of any one of the methods described herein, mutant cells are identified according to the presence of the one or more analyte(s) at the location in the tissue sample. In some embodiments, a mutant cell is identified according to the presence of one or more biomarkers described herein. In some embodiments, a mutant cell is identified according to the presence of one or more cell-surface biomarkers, e.g., a cell-surface receptor, at the location in the tissue sample.

In some embodiments, a cell within a location at the tissue sample is identified as a mutant cell if the presence of the one or more analyte(s) at the location in the tissue sample are significantly different from the presence of the analyte(s) at the different location(s). In some embodiments, a cell within a location at the tissue sample is identified as a mutant cell if the presence of the one or more analyte(s) at the location in the tissue sample are significantly greater than the presence of the analyte(s) at the different location(s). In some embodiments, the mutant cell(s) within the location at the tissue sample is determined to be resected if the presence of the analyte(s) at the location in the tissue sample are significantly less than the presence of the analyte at the different location(s).

In some embodiments, a location at the tissue sample comprises about 1 to about 100,000 cells.

The spatial barcode of the capture probe can be any spatial barcode described herein.

In some embodiments of any of the methods described herein, the array can be any of the types of arrays described herein. For example, the array comprises a slide. In some embodiments, the capture probe is attached to the slide (e.g., by its 5′ end).

In some embodiments of any of the methods described herein, the array is a bead array. In some embodiments, a 5′ end of the capture probe is attached to a bead of the bead array.

In some embodiments of any of the methods described herein, the method comprises extending a 3′ end of the capture probe using the specifically bound analyte or analyte binding agent barcode as a template to generate an extended capture probe.

In some embodiments, additional methods are used in combination with the methods described herein to determine the site and size of the tissue to be resected in a subject. In some embodiments, medical imaging modalities such as computed tomography (CT) and magnetic resonance imaging (MRI) are used in combination with the methods described herein. In some embodiments, a position emission tomography (PET) is used in combination with the methods described herein. For example, an initial scanning of a cancer patient and/or imaging of a tissue sample from a cancer patient can be performed using, e.g., MRI, CT, and/or PET prior to the methods described herein, and a preliminary assessment of a surgical margin can be performed. The initial information can provide guidance on, e.g., where to obtain the tissue sample for use in the methods described herein, the size of the tissue sample, and/or the number of tissue samples needed. In another example, a follow-up scanning and/or imaging can be performed using e.g., MRI, CT, and/or PET after the methods described herein are performed. The follow-up scanning and/or imaging provide information on, e.g., the clearance of the cancerous and/or diseased tissue, and whether there are residual cancerous and/or diseased tissue. Any other suitable methods known in the art can also be used in combination with the methods described herein.

Some embodiments of any of the methods described herein can further include obtaining the tissue sample from the subject (e.g., obtain a biopsy sample from the subject).

In some embodiments of any of the methods described herein, at least a portion of the tissue to be resected includes cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and/or diseased tissue. In some embodiments, at least 80%, at least 85%, at least 90%, at least 95%, at least 99%, or 100% of the tissue to be resected includes one or more of cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and disease tissue.

In some embodiments, the tissue resection is considered successful when less than 20%, less than 15%, less than 10%, less than 5%, or zero cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and/or diseased tissue are detected post-resection as compared to the identified cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and/or diseased tissue prior to the resection.

In some embodiments of any of the methods described herein, the surgical margin can be the margin between the location(s) of one or more of cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and disease tissue, and the location(s) of healthy or normal tissue, in a subject.

(d) Methods of Reducing the Risk of Re-Excision of a Tissue

Also provided herein are methods of reducing the risk of re-excision of a tissue from a subject that include: (a) contacting a tissue sample obtained from the subject to an array comprising a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises a (i) capture domain that specifically binds to an analyte of the tissue sample and (ii) a spatial barcode; (b) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (c) comparing the presence of the analyte at the location in the tissue sample to the presence of the analyte at different location(s) in the tissue sample, and determining the surgical margin based on the comparison and (d) resecting tissue from the subject using the surgical margin determined in step (c), wherein the method results in a reduction in the risk of future re-excision of the tissue in the subject.

Also provided herein are methods of reducing the risk of re-excision of a tissue from a subject, the method comprising: resecting tissue from the subject using a surgical margin previously determined using a method comprising the steps of: (a) contacting a tissue sample obtained from the subject to an array comprising a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises a (i) capture domain that specifically binds to an analyte of the tissue sample and (ii) a spatial barcode; (b) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (c) comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the surgical margin based on the comparison.

For example, when a clinician practices the method, the data obtained can provide the clinician with guidance on where to resect the tissue margins thereby reducing the probability that an additional resection might be needed; the clinician will be more confident in capturing tissue margins for a more complete resection. In some embodiments, the analyte is a DNA or RNA. In some embodiments, the analyte is a messenger RNA (mRNA) molecule. In some embodiments, the analyte is a genomic DNA. In some embodiments, the analyte comprises a full-length sequence of a biomarker described herein. In some embodiments, the analyte comprises a fragment of the sequence of a biomarker described herein. In some embodiments of any of the methods described herein, each of the plurality of capture probes comprises (i) a capture domain that binds specifically to an analyte of the tissue sample and (ii) a spatial barcode. The capture probe can be any capture probe described herein. In some embodiments, the capture domain of the capture probe comprises a sequence that is substantially complementary (e.g., at least 80%, at least 85%, at least 90%, at least 95%, at least 99%, or 100% complementary) to a portion of the sequence of the analyte of the tissue sample. In some embodiments, the capture domain can have a total of about 10 nucleotides to about 125 nucleotides (or any of the subranges of this range described herein). In some embodiments, the sequence that is substantially complementary to a portion of the sequence of the analyte can be a random sequence. In some embodiments, the sequence that is substantially complementary to a portion of the sequence of the analyte can include a poly(T) oligonucleotide sequence (e.g., at least 5 contiguous Ts, at least 10 contiguous Ts, or at least 15 contiguous Ts).

In some embodiments of any of the methods described herein, step (b) comprises sequencing (i) all or a part of the nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof. In some embodiments, the sequencing is high throughput sequencing, sequencing by hybridization, or any of the other methods for sequencing described herein or known in the art. For example, sequencing can involve one or more of nucleic acid amplification, the ligation or addition of one or more sequencing adaptors, cleavage of the capture probe from the array, extension of the capture probe using the bound cDNA as a template, and generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe. Non-limiting methods for determining the sequence of (i) all or a part of the sequence of the target nucleic acid, or a complement thereof, or (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode, or a complement thereof, are described herein or are known in the art.

Also provided herein are methods of reducing the risk of re-excision of a tissue from a subject that include: (a) contacting a tissue sample obtained from the subject to a plurality of analyte capture agents, wherein an analyte capture agent of the plurality of analyte capture agents comprises an analyte binding moiety barcode, an analyte capture sequence, and an analyte binding moiety that binds specifically to an analyte; (b) disposing the tissue sample onto an array, wherein the array comprises a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises a spatial barcode and a capture domain that binds specifically to the analyte capture sequence; (c) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte binding moiety barcode or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (d) comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the surgical margin based on the comparison; and (e) resecting tissue from the subject using the surgical margin determined in step (d), where the method results in a reduction in the risk of future re-excision of the tissue in the subject. In some embodiments, the analyte is a protein.

Also provided herein are methods of reducing the risk of re-excision of a tissue from a subject, the method comprising: resecting tissue from the subject using a surgical margin previously determined using a method comprising the steps of: (a) contacting a tissue sample obtained from the subject to a plurality of analyte capture agents, wherein an analyte capture agent of the plurality of analyte capture agents comprises an analyte binding moiety barcode, an analyte capture sequence, and an analyte binding moiety that binds specifically to an analyte; (b) disposing the tissue sample onto an array, wherein the array comprises a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises a spatial barcode and a capture domain that binds specifically to the analyte capture sequence; (c) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte binding moiety barcode or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (d) comparing the presence of the analyte at the location in the tissue sample to the presence of the analyte at different location(s) in the tissue sample, and determining the surgical margin based on the comparison.

In some embodiments, the analyte is a full-length protein. In some embodiments, the analyte is a fragment of a protein. In some embodiments, the analyte is a byproduct of a protein. In some embodiments, the protein is any of the exemplary cancer biomarkers described herein.

In some embodiments of any of the methods described herein, each of the plurality of analyte capture agents comprises an analyte binding moiety barcode, an analyte capture sequence, and an analyte binding moiety that binds specifically to an analyte. In some embodiments, the analyte binding moiety is an antibody or an antigen-binding antibody fragment (e.g., a Fab). Any other suitable protein binding moiety known in the art can also be used as an analyte binding moiety. In some embodiments, the analyte binding moiety barcode can be any barcode described herein. In some embodiments, the analyte capture sequence can be any analyte capture sequence described herein. In some embodiments of any of the methods described herein, each of the plurality of capture probes comprises a spatial barcode and a capture domain that binds specifically to the analyte capture sequence. The capture probe can be any capture probe described herein. In some embodiments, the capture domain of the capture probe comprises a sequence that is substantially complementary (e.g., at least 80%, at least 85%, at least 90%, at least 95%, at least 99%, or 100% complementary) to a portion of the analyte capture sequence. In some embodiments, the capture domain can have a total of about 10 nucleotides to about 125 nucleotides (or any of the subranges of this range described herein). In some embodiments, the sequence that is substantially complementary to a portion of the analyte capture sequence can be a random sequence. In some embodiments, the sequence that is substantially complementary to a portion of the analyte capture sequence can include a poly(T) oligonucleotide sequence (e.g., at least 5 contiguous Ts, at least 10 contiguous Ts, or at least 15 contiguous Ts).

In some embodiments, the determining of the sequence is by sequencing. In some embodiments, the sequencing is high throughput sequencing, sequencing by hybridization, or any of the other methods for sequencing described herein or known in the art. For example, sequencing can involve one or more of nucleic acid amplification, the ligation or addition of one or more sequencing adaptors, cleavage of the capture probe from the array, extension of the capture probe using the bound analyte capture sequence as a template, and generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe. Non-limiting methods for determining the sequence of (i) all or a part of the nucleic acid sequence corresponding to the analyte binding moiety barcode, or a complement thereof, or (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode, or a complement thereof, are described herein or are known in the art.

In some embodiments, the resected tissue is or comprises a tumor (e.g., a malignant or a benign tumor). In some embodiments, the tumor is a solid tumor. In some embodiments, the subject is suspected of having a cancer. In some embodiments, the subject has been previously diagnosed or identified as having a cancer (e.g., any of the exemplary cancers described herein).

In some embodiments, the resected tissue can include a tumor (e.g., a malignant tumor) of any of the types of cancer describes herein.

In some embodiments, the analyte is a tumor biomarker. In some embodiments, the analyte is a tumor antigen. Exemplary tumor antigens include, but are not limited to, any of the exemplary tumor antigens described herein.

In some embodiments, the resected tissue is or comprises an infected tissue, a necrotic tissue, or a diseased tissue. In some embodiments, the analyte can be associated with an infection, necrosis, inflammation, or disease. Non-limiting examples of such analytes are known in the art.

In some embodiments, the resected tissue is infected by a bacterium (e.g., any of the exemplary bacteria described herein), a parasite or protozoa (e.g., any of the exemplary parasites or protozoa described herein), a fungus (e.g., any of the exemplary fungi described herein), or a virus (e.g., any of the exemplary viruses described herein).

In some embodiments, the methods provided herein comprise comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the size and site of a tissue to be resected from the subject based on the comparison. In some embodiments, the different location(s) in the tissue sample are reference location(s). In some embodiments, the reference location(s) in the tissue sample are locations of healthy tissue. In some embodiments, the reference location(s) in the tissue sample are locations of non-cancerous tissue. In some embodiments, the reference location(s) in the tissue sample are locations of non-tumor tissue. In some embodiments, the reference location(s) in the tissue sample are locations with no abnormalities such as tumor, cancer, necrosis, inflammation, infection, or disease.

In some embodiments, the presence of the analyte at the location in the tissue sample is significantly different from the presence of the analyte at the different location(s) in the tissue. In some embodiments, the presence of the analyte at the location in the tissue sample is significantly greater than the presence of the analyte at the different location(s) in the tissue sample. In some embodiments, the presence of the analyte at the location in the tissue sample is significantly less than the presence of the analyte at the different location(s) in the tissue sample.

In some embodiments, the location at the tissue sample is determined to be resected if the presence of the analyte at the location in the tissue sample is significantly different from the presence of the analyte at the different location(s). In some embodiments, the location at the tissue sample is determined to be resected if the presence of the analyte at the location in the tissue sample is significantly greater than the presence of the analyte at the different location(s). In some embodiments, the location at the tissue sample is determined to be resected if the presence of the analyte at the location in the tissue sample is significantly less than the presence of the analyte at the different location(s).

In some embodiments, the presence of the analyte at the location in the tissue sample is about 0.1-fold to about 100-fold (e.g., or any of the subranges of this range described herein) greater than the presence of the analyte at the different location(s).

In some embodiments, the presence of the analyte at the location in the tissue sample is about 1% to about 99% (e.g., or any of the subranges of this range described herein) decreased than the presence of the analyte at the different location(s).

In some embodiments, the presence of certain biomarkers associated with a cancer and/or disease (e.g., breast cancer biomarkers in ductal carcinoma) at a location in a tissue sample are evaluated. If the presence of certain biomarkers associated with a cancer and/or disease are below a threshold value for those biomarkers, the location in the tissue sample is considered “clear.” If the presence of certain biomarkers associated with a cancer and/or disease are above a threshold value for those biomarkers, the location in the tissue sample is considered within the margin of tissue to be resected.

In some embodiments, the method further comprises comparing the presence of one or more additional analyte(s) at the location in the tissue sample with the presence of the one or more additional analyte(s) at the different location(s) in the tissue sample. In some embodiments, the presence of a total of about 1 to about 20,000 (e.g., or any of the subranges of this range described herein) analyte(s) at the location are compared to the presence of the analyte(s) at the different location(s).

In some embodiments of any one of the methods described herein, mutant cells are identified according to the presence of the one or more analyte(s) at the location in the tissue sample. In some embodiments, a mutant cell is identified according to the presence of one or more biomarkers described herein. In some embodiments, a mutant cell is identified according to the presence of one or more cell-surface biomarkers, e.g., a cell-surface receptor, at the location in the tissue sample.

In some embodiments, a cell within a location at the tissue sample is identified as a mutant cell if the presence of the one or more analyte(s) at the location in the tissue sample are significantly different from the presence of the analyte(s) at the different location(s). In some embodiments, a cell within a location at the tissue sample is identified as a mutant cell if the presence of the one or more analyte(s) at the location in the tissue sample are significantly greater than the presence of the analyte(s) at the different location(s). In some embodiments, the mutant cell(s) within the location at the tissue sample is determined to be resected if the presence of the analyte(s) at the location in the tissue sample are significantly less than the presence of the analyte at the different location(s).

In some embodiments, a location at the tissue sample comprises about 1 to about 100,000 cells.

The spatial barcode of the capture probe can be any spatial barcode described herein.

In some embodiments of any of the methods described herein, the array can be any of the types of arrays described herein. For example, the array comprises a slide. In some embodiments, the capture probe is attached to the slide (e.g., by its 5′ end).

In some embodiments of any of the methods described herein, the array is a bead array. In some embodiments, a 5′ end of the capture probe is attached to a bead of the bead array.

In some embodiments of any of the methods described herein, the method comprises extending a 3′ end of the capture probe using the specifically bound analyte or analyte binding agent barcode as a template to generate an extended capture probe.

In some embodiments, additional methods are used in combination with the methods described herein to determine the site and size of the tissue to be resected in a subject. In some embodiments, medical imaging modalities such as computed tomography (CT) and magnetic resonance imaging (MRI) are used in combination with the methods described herein. In some embodiments, a position emission tomography (PET) is used in combination with the methods described herein. For example, an initial scanning of a cancer patient and/or imaging of a tissue sample from a cancer patient can be performed using, e.g., MRI, CT, and/or PET prior to the methods described herein, and a preliminary assessment of a surgical margin can be performed. The initial information can provide guidance on, e.g., where to obtain the tissue sample for use in the methods described herein, the size of the tissue sample, and/or the number of tissue samples needed. In another example, a follow-up scanning and/or imaging can be performed using e.g., MRI, CT, and/or PET after the methods described herein are performed. The follow-up scanning and/or imaging provide information on, e.g., the clearance of the cancerous and/or diseased tissue, and whether there are residual cancerous and/or diseased tissue. Any other suitable methods known in the art can also be used in combination with the methods described herein.

Some embodiments of any of the methods described herein can further include obtaining the tissue sample from the subject (e.g., obtain a biopsy sample from the subject).

In some embodiments of any of the methods described herein, at least a portion of the resected tissue includes cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and/or diseased tissue. In some embodiments, at least 80%, at least 85%, at least 90%, at least 95%, at least 99%, or 100% of the resected tissue includes one or more of cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and disease tissue.

In some embodiments of any of the methods described herein, the surgical margin can be the margin between the location(s) of one or more of cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and disease tissue, and the location(s) of healthy or normal tissue, in a subject.

In some embodiments, the methods described herein are more accurate in determining the surgical margin of a tissue to be resected than the traditional methods, such as medical imaging or scanning methods.

In some embodiments, a re-excision includes additional tissue excisions during the initial surgical procedure to obtain the tissue sample. In some embodiments, a re-excision includes additional tissue excisions during a future procedure.

In some embodiments, the methods described herein results in a reduction (e.g., at least a 5% reduction, at least a 10% reduction, at least a 15% reduction, at least a 20% reduction, at least a 25% reduction, at least a 30% reduction, at least a 35% reduction, at least a 40% reduction, at least a 45% reduction, at least a 50% reduction, at least a 55% reduction, at least a 60% reduction, at least a 65% reduction, at least a 70% reduction, at least a 75% reduction, at least a 80% reduction, at least a 85% reduction, at least a 90% reduction, at least a 95% reduction, or at least a 99% reduction, or about a 1% to about a 5% reduction, about a 5% to about a 10% reduction, about a 10% to about a 99% reduction, about a 10% to about a 90% reduction, about a 10% to about a 80% reduction, about a 10% to about a 70% reduction, about a 10% to about a 60% reduction, about a 10% to about a 50% reduction, about a 10% to about a 40% reduction, about a 10% to about a 30% reduction, about a 10% to about a 20% reduction, about a 10% to about a 15% reduction, about a 20% to about a 99% reduction, about a 20% to about a 90% reduction, about a 20% to about a 80% reduction, about a 20% to about a 70% reduction, about a 20% to about a 60% reduction, about a 20% to about a 50% reduction, about a 20% to about a 40% reduction, about a 20% to about a 30% reduction, about a 30% to about a 99% reduction, about a 30% to about a 90% reduction, about a 30% to about a 80% reduction, about a 30% to about a 70% reduction, about a 30% to about a 60% reduction, about a 30% to about a 50% reduction, about a 30% to about a 40% reduction, about a 40% to about a 99% reduction, about a 40% to about a 90% reduction, about a 40% to about a 80% reduction, about a 40% to about a 70% reduction, about a 40% to about a 60% reduction, about a 40% to about a 50% reduction, about a 50% to about a 99% reduction, about a 50% to about a 90% reduction, about a 50% to about a 50% to about a 80% reduction, about a 50% to about a 70% reduction, about a 50% to about a 65% reduction, about a 50% to about a 60% reduction, about a 50% to about a 55% reduction, about a 60% to about a 99% reduction, about a 60% to about a 90% reduction, about a 60% to about a 80% reduction, about a 60% to about a 75% reduction, about a 60% to about a 70% reduction, about a 60% to about a 65% reduction, about a 70% to about a 99% reduction, about a 70% to about a 95% reduction, about a 70% to about a 90% reduction, about a 70% to about a 85% reduction, about a 70% to about a 80% reduction, about a 70% to about a 75% reduction, about a 80% to about a 99% reduction, about a 80% to about a 95% reduction, about a 80% to about a 90% reduction, about a 80% to about a 85% reduction, about a 90% to about a 99% reduction, about a 90% to about a 95% reduction, or about a 95% to about a 99% reduction) in the risk of future re-excision of the tissue in the subject (e.g., as a compared to a similar subject that has undergone resection based on an imaging method or by the physician's visual assessment during resection).

A non-limiting example of a method for identifying a surgical margin of a tissue to be resected is depicted in FIG. 4 . Briefly, a biopsy tissue is excised from a subject and imaged for potential tumor tissue cells or other disease related cells. After imaging, the tissue is sectioned and one or more sections of tissue are subjected to the methods described herein for spatial determination and location of cells of interest in a tissue. For example, gene expression along the margins of a tissue section indicative of cancer or a disease state and/or the location of receptors along the margins of a tissue section indicative of cancer or a disease state is determined via a spatial array. Additionally, known mutations associated with a cancer or disease state can be spatially identified along the margins of a tissue section. Gene expression analysis and/or receptor presence and/or mutational state of cells within the tissue margins can be used to determine whether a surgeon has sufficiently resected the tissue. For example, the presence of one or more genes, receptors and/or mutations indicative of a cancer or disease state in a spatially analyzed tissue margin section would indicate that the resection of the cancerous or diseased tissue was not complete as such a more expanded resection might be necessary. When the tissue section margins are absent of those biomarkers that were used to indicate a cancer or disease state, then a resection could be considered successful for that location.

(e) Methods of Reducing the Rate of Recurrence of a Tissue Abnormality

Provided herein are methods of reducing the rate of recurrence of a tissue abnormality in a subject that include: (a) contacting a tissue sample obtained from the subject to an array comprising a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises a (i) capture domain that specifically binds to an analyte of the tissue sample and (ii) a spatial barcode; (b) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (c) comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the surgical margin based on the comparison; (d) resecting tissue from the subject using the surgical margin determined in step (c), wherein the method results in a reduction in the rate of recurrence of a tissue abnormality in the subject.

Also provided herein are methods of reducing the rate of recurrence of a tissue abnormality in a subject, the method comprising: resecting tissue from the subject using a surgical margin previously determined using a method comprising the steps of: (a) contacting a tissue sample obtained from the subject to an array comprising a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises a (i) capture domain that specifically binds to an analyte of the tissue sample and (ii) a spatial barcode; (b) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (c) comparing the presence of the analyte at the location in the tissue sample to the presence of the analyte at different location(s) in the tissue sample, and determining the surgical margin based on the comparison.

For example, the methods described herein allow a clinician to identify tissue tumor margins with confidence such that tissue resection will increase the likelihood that the complete tumor or tissue abnormality has been removed from the subject, thereby reducing the rate of recurrence of the abnormal tissue or tumor in the subject.

In some embodiments, the analyte is a DNA or RNA. In some embodiments, the analyte is a messenger RNA (mRNA) molecule. In some embodiments, the analyte is a genomic DNA. In some embodiments, the analyte comprises a full-length sequence of a biomarker described herein. In some embodiments, the analyte comprises a fragment of the sequence of a biomarker described herein. In some embodiments of any of the methods described herein, each of the plurality of capture probes comprises (i) a capture domain that binds specifically to an analyte of the tissue sample and (ii) a spatial barcode. The capture probe can be any capture probe described herein. In some embodiments, the capture domain of the capture probe comprises a sequence that is substantially complementary (e.g., at least 80%, at least 85%, at least 90%, at least 95%, at least 99%, or 100% complementary) to a portion of the sequence of the analyte of the tissue sample. In some embodiments, the capture domain can have a total of about 10 nucleotides to about 125 nucleotides (or any of the subranges of this range described herein). In some embodiments, the sequence that is substantially complementary to a portion of the sequence of the analyte can be a random sequence. In some embodiments, the sequence that is substantially complementary to a portion of the sequence of the analyte can include a poly(T) oligonucleotide sequence (e.g., at least 5 contiguous Ts, at least 10 contiguous Ts, or at least 15 contiguous Ts).

In some embodiments of any of the methods described herein, step (b) comprises sequencing (i) all or a part of the nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof. In some embodiments, the sequencing is high throughput sequencing, sequencing by hybridization, or any of the other methods for sequencing described herein or known in the art. For example, sequencing can involve one or more of nucleic acid amplification, the ligation or addition of one or more sequencing adaptors, cleavage of the capture probe from the array, extension of the capture probe using the bound cDNA as a template, and generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe. Non-limiting methods for determining the sequence of (i) all or a part of the sequence of the target nucleic acid, or a complement thereof, or (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode, or a complement thereof, are described herein or are known in the art.

Also provided herein are methods of reducing the rate of recurrence of a tissue abnormality in a subject that include: (a) contacting a tissue sample obtained from the subject to a plurality of analyte capture agents, wherein an analyte capture agent of the plurality of analyte capture agents comprises an analyte binding moiety barcode, an analyte capture sequence, and an analyte binding moiety that binds specifically to an analyte; (b) disposing the tissue sample onto an array, wherein the array comprises a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises a spatial barcode and a capture domain that binds specifically to the analyte capture sequence; (c) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte binding moiety barcode or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (d) comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the surgical margin based on the comparison; and (e) resecting tissue from the subject using the surgical margin determined in step (d), where the method results in a reduction in the rate of recurrence of a tissue abnormality in the subject.

Also provided herein are methods of reducing the rate of recurrence of a tissue abnormality in a subject, the method comprising: resecting tissue from the subject using a surgical margin previously determined using a method comprising the steps of: (a) contacting a tissue sample obtained from the subject to a plurality of analyte capture agents, wherein an analyte capture agent of the plurality of analyte capture agents comprises an analyte binding moiety barcode, an analyte capture sequence, and an analyte binding moiety that binds specifically to an analyte; (b) disposing the tissue sample onto an array, wherein the array comprises a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises a spatial barcode and a capture domain that binds specifically to the analyte capture sequence; (c) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte binding moiety barcode or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (d) comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the surgical margin based on the comparison.

In some embodiments, the analyte is a protein. In some embodiments, the analyte is a full-length protein. In some embodiments, the analyte is a fragment of a protein. In some embodiments, the analyte is a byproduct of a protein. In some embodiments, the protein is any of the exemplary cancer biomarkers described herein.

In some embodiments of any of the methods described herein, each of the plurality of analyte capture agents comprises an analyte binding moiety barcode, an analyte capture sequence, and an analyte binding moiety that binds specifically to an analyte. In some embodiments, the analyte binding moiety is an antibody or an antigen-binding antibody fragment (e.g., a Fab). Any other suitable protein binding moiety known in the art can also be used as an analyte binding moiety. In some embodiments, the analyte binding moiety barcode can be any barcode described herein. In some embodiments, the analyte capture sequence can be any analyte capture sequence described herein. In some embodiments of any of the methods described herein, each of the plurality of capture probes comprises a spatial barcode and a capture domain that binds specifically to the analyte capture sequence. The capture probe can be any capture probe described herein. In some embodiments, the capture domain of the capture probe comprises a sequence that is substantially complementary (e.g., at least 80%, at least 85%, at least 90%, at least 95%, at least 99%, or 100% complementary) to a portion of the analyte capture sequence. In some embodiments, the capture domain can have a total of about 10 nucleotides to about 125 nucleotides (or any of the subranges of this range described herein). In some embodiments, the sequence that is substantially complementary to a portion of the analyte capture sequence can be a random sequence. In some embodiments, the sequence that is substantially complementary to a portion of the analyte capture sequence can include a poly(T) oligonucleotide sequence (e.g., at least 5 contiguous Ts, at least 10 contiguous Ts, or at least 15 contiguous Ts).

In some embodiments, the determining of the sequence is by sequencing. In some embodiments, the sequencing is high throughput sequencing, sequencing by hybridization, or any of the other methods for sequencing described herein or known in the art. For example, sequencing can involve one or more of nucleic acid amplification, the ligation or addition of one or more sequencing adaptors, cleavage of the capture probe from the array, extension of the capture probe using the bound analyte capture sequence as a template, and generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe. Non-limiting methods for determining the sequence of (i) all or a part of the nucleic acid sequence corresponding to the analyte binding moiety barcode, or a complement thereof, or (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode, or a complement thereof, are described herein or are known in the art.

In some embodiments, an abnormality in the resected tissue is or comprises a tumor (e.g., a malignant or a benign tumor). In some embodiments, the tumor is a solid tumor. In some embodiments, the subject is suspected of having a cancer. In some embodiments, the subject has been previously diagnosed or identified as having a cancer (e.g., any of the exemplary cancers described herein).

In some embodiments, the resected tissue can include a tumor, e.g., a tumor (e.g., a malignant tumor) of any of the types of cancer describes herein.

In some embodiments, the analyte is a tumor biomarker. In some embodiments, the analyte is a tumor antigen. Exemplary tumor antigens include, but are not limited to, any of the exemplary tumor antigens described herein.

In some embodiments, the resected tissue is or comprises an infected tissue, a necrotic tissue, or a diseased tissue. In some embodiments, the analyte can be associated with an infection, necrosis, inflammation, or disease. Non-limiting examples of such analytes are known in the art.

In some embodiments, the resected tissue is infected by a bacterium (e.g., any of the exemplary bacteria described herein), a parasite or protozoa (e.g., any of the exemplary parasites or protozoa described herein), a fungus (e.g., any of the exemplary fungi described herein), or a virus (e.g., any of the exemplary viruses described herein).

In some embodiments, the methods provided herein comprise comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the size and site of a tissue to be resected from the subject based on the comparison. In some embodiments, the different location(s) in the tissue sample are reference location(s). In some embodiments, the reference location(s) in the tissue sample are locations of healthy tissue. In some embodiments, the reference location(s) in the tissue sample are locations of non-cancerous tissue. In some embodiments, the reference location(s) in the tissue sample are locations of non-tumor tissue. In some embodiments, the reference location(s) in the tissue sample are locations with no abnormalities such as tumor, cancer, necrosis, inflammation, infection, or disease.

In some embodiments, the presence of the analyte at the location in the tissue sample is significantly different from the presence of the analyte at the different location(s) in the tissue. In some embodiments, the presence of the analyte at the location in the tissue sample is significantly greater than the presence of the analyte at the different location(s) in the tissue sample. In some embodiments, the presence of the analyte at the location in the tissue sample is significantly less than the presence of the analyte at the different location(s) in the tissue sample.

In some embodiments, the location at the tissue sample is determined to be resected if the presence of the analyte at the location in the tissue sample is significantly different from the presence of the analyte at the different location(s). In some embodiments, the location at the tissue sample is determined to be resected if the presence of the analyte at the location in the tissue sample is significantly greater than the presence of the analyte at the different location(s). In some embodiments, the location at the tissue sample is determined to be resected if the presence of the analyte at the location in the tissue sample is significantly less than the presence of the analyte at the different location(s).

In some embodiments, the presence of the analyte at the location in the tissue sample is about 0.1-fold to about 100-fold (e.g., or any of the subranges of this range described herein) greater than the presence of the analyte at the different location(s).

In some embodiments, the presence of the analyte at the location in the tissue sample is about 1% to about 99% (e.g., or any of the subranges of this range described herein) decreased than the presence of the analyte at the different location(s).

In some embodiments, the presence of certain biomarkers associated with a cancer and/or disease (e.g., breast cancer biomarkers in ductal carcinoma) at a location in a tissue sample are evaluated. If the presence of certain biomarkers associated with a cancer and/or disease are below a threshold value for those biomarkers, the location in the tissue sample is considered “clear.” If the presence of certain biomarkers associated with a cancer and/or disease are above a threshold value for those biomarkers, the location in the tissue sample is considered within the margin of tissue to be resected.

In some embodiments, the method further comprises comparing presence of one or more additional analyte(s) at the location in the tissue sample with the presence of the one or more additional analyte(s) at the different location(s) in the tissue sample. In some embodiments, the presence of a total of about 1 to about 20,000 (e.g., or any of the subranges of this range described herein) analyte(s) at the location are compared to the presence of the analyte(s) at the different location(s).

In some embodiments of any one of the methods described herein, mutant cells are identified according to the presence of the one or more analyte(s) at the location in the tissue sample. In some embodiments, a mutant cell is identified according to the presence of one or more biomarkers described herein. In some embodiments, a mutant cell is identified according to the presence of one or more cell-surface biomarkers, e.g., a cell-surface receptor, at the location in the tissue sample.

In some embodiments, a cell within a location at the tissue sample is identified as a mutant cell if the presence of the one or more analyte(s) at the location in the tissue sample are significantly different from the presence of the analyte(s) at the different location(s). In some embodiments, a cell within a location at the tissue sample is identified as a mutant cell if the presence of the one or more analyte(s) at the location in the tissue sample are significantly greater than the presence of the analyte(s) at the different location(s). In some embodiments, the mutant cell(s) within the location at the tissue sample is determined to be resected if the presence of the analyte(s) at the location in the tissue sample are significantly less than the presence of the analyte at the different location(s).

In some embodiments, a location at the tissue sample comprises about 1 to about 100,000 cells.

The spatial barcode of the capture probe can be any spatial barcode described herein.

In some embodiments of any of the methods described herein, the array can be any of the types of arrays described herein. For example, the array comprises a slide. In some embodiments, the capture probe is attached to the slide (e.g., by its 5′ end).

In some embodiments of any of the methods described herein, the array is a bead array. In some embodiments, a 5′ end of the capture probe is attached to a bead of the bead array.

In some embodiments of any of the methods described herein, the method comprises extending a 3′ end of the capture probe using the specifically bound analyte or analyte binding agent barcode as a template to generate an extended capture probe.

In some embodiments, additional methods are used in combination with the methods described herein to determine the site and size of the tissue to be resected in a subject. In some embodiments, medical imaging modalities such as computed tomography (CT) and magnetic resonance imaging (MRI) are used in combination with the methods described herein. In some embodiments, a position emission tomography (PET) is used in combination with the methods described herein. For example, an initial scanning of a cancer patient and/or imaging of a tissue sample from a cancer patient can be performed using, e.g., MRI, CT, and/or PET prior to the methods described herein, and a preliminary assessment of a surgical margin can be performed. The initial information can provide guidance on, e.g., where to obtain the tissue sample for use in the methods described herein, the size of the tissue sample, and/or the number of tissue samples needed. In another example, a follow-up scanning and/or imaging can be performed using e.g., MRI, CT, and/or PET after the methods described herein are performed. The follow-up scanning and/or imaging provide information on, e.g., the clearance of the cancerous and/or diseased tissue, and whether there are residual cancerous and/or diseased tissue. Any other suitable methods known in the art can also be used in combination with the methods described herein.

Some embodiments of any of the methods described herein can further include obtaining the tissue sample from the subject (e.g., obtain a biopsy sample from the subject).

In some embodiments of any of the methods described herein, at least a portion of the resected tissue includes cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and/or diseased tissue. In some embodiments, at least 80%, at least 85%, at least 90%, at least 95%, at least 99%, or 100% of the resected tissue includes one or more of cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and disease tissue.

In some embodiments of any of the methods described herein, the surgical margin can be the margin between the location(s) of one or more of cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and disease tissue, and the location(s) of healthy or normal tissue, in a subject.

In some embodiments, the methods described herein results in a reduction (e.g., at least a 5% reduction, at least a 10% reduction, at least a 15% reduction, at least a 20% reduction, at least a 25% reduction, at least a 30% reduction, at least a 35% reduction, at least a 40% reduction, at least a 45% reduction, at least a 50% reduction, at least a 55% reduction, at least a 60% reduction, at least a 65% reduction, at least a 70% reduction, at least a 75% reduction, at least a 80% reduction, at least a 85% reduction, at least a 90% reduction, at least a 95% reduction, or at least a 99% reduction, or about a 1% to about a 99% reduction (e.g., or any of the subranges of this range described herein) in the rate of recurrence of a tissue abnormality (e.g., any of the cancers described herein) in the subject (e.g., as a compared to a similar subject that has undergone resection based on an imaging method or by the physician's visual assessment during resection).

(f) Methods of Treating a Subject by Excising or Avoiding Excision of a Nerve or Blood Vessel

Also provided herein are methods of treating a subject that include: (a) contacting a tissue sample obtained from the subject to an array comprising a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises a (i) capture domain that specifically binds to an analyte of the tissue sample and (ii) a spatial barcode; (b) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (c) comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the surgical margin based on the comparison; and (d) excising a nerve or blood vessel that is within the determined surgical margin in the subject, or avoiding excision of a nerve or blood vessel outside of the determined surgical margin in the subject.

Also provided herein are methods of treating a subject, the method comprising: excising a nerve or blood vessel that is within a surgical margin in the subject, or avoiding excision of a nerve or blood vessel outside of the surgical margin in the subject, wherein the surgical margin was previously determined using a method comprising the steps of: (a) contacting a tissue sample obtained from the subject to an array comprising a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises a (i) capture domain that specifically binds to an analyte of the tissue sample and (ii) a spatial barcode; (b) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (c) comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the surgical margin based on the comparison.

For example, when a clinician practices the method, the data obtained can provide the clinician with information of the accurate location of the cancerous or diseased tissue, therefore provide the accurate surgical margin of the tissue to be resected. Using the information of the accurate surgical margin provided by the method described herein, the clinician is able to achieve, e.g., more complete and accurate excision, thereby treating the subject in need thereof.

In some embodiments, the analyte is a DNA or RNA. In some embodiments, the analyte is a messenger RNA (mRNA) molecule. In some embodiments, the analyte is a genomic DNA. In some embodiments, the analyte comprises a full-length sequence of a biomarker described herein. In some embodiments, the analyte comprises a fragment of the sequence of a biomarker described herein. In some embodiments of any of the methods described herein, each of the plurality of capture probes comprises (i) a capture domain that binds specifically to an analyte of the tissue sample and (ii) a spatial barcode. The capture probe can be any capture probe described herein. In some embodiments, the capture domain of the capture probe comprises a sequence that is substantially complementary (e.g., at least 80%, at least 85%, at least 90%, at least 95%, at least 99%, or 100% complementary) to a portion of the sequence of the analyte of the tissue sample. In some embodiments, the capture domain can have a total of about 10 nucleotides to about 125 nucleotides (or any of the subranges of this range described herein). In some embodiments, the sequence that is substantially complementary to a portion of the sequence of the analyte can be a random sequence. In some embodiments, the sequence that is substantially complementary to a portion of the sequence of the analyte can include a poly(T) oligonucleotide sequence (e.g., at least 5 contiguous Ts, at least 10 contiguous Ts, or at least 15 contiguous Ts).

In some embodiments of any of the methods described herein, step (b) comprises sequencing (i) all or a part of the nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof. In some embodiments, the sequencing is high throughput sequencing, sequencing by hybridization, or any of the other methods for sequencing described herein or known in the art. For example, sequencing can involve one or more of nucleic acid amplification, the ligation or addition of one or more sequencing adaptors, cleavage of the capture probe from the array, extension of the capture probe using the bound cDNA as a template, and generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe. Non-limiting methods for determining the sequence of (i) all or a part of the sequence of the target nucleic acid, or a complement thereof, or (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode, or a complement thereof, are described herein or are known in the art.

Also provided herein are methods of treating a subject that include: (a) contacting a tissue sample obtained from the subject to a plurality of analyte capture agents, wherein an analyte capture agent of the plurality of analyte capture agents comprises an analyte binding moiety barcode, an analyte capture sequence, and an analyte binding moiety that binds specifically to an analyte; (b) disposing the tissue sample onto an array, wherein the array comprises a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises a spatial barcode and a capture domain that binds specifically to the analyte capture sequence; (c) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte binding moiety barcode or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (d) comparing presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the surgical margin based on the comparison; and (e) excising a nerve or blood vessel that is within the determined surgical margin in the subject, or avoiding excision of a nerve or blood vessel outside of the determined surgical margin in the subject.

Also provided herein are methods of treating a subject, the method comprising: excising a nerve or blood vessel that is within a surgical margin in the subject, or avoiding excision of a nerve or blood vessel outside of the surgical margin in the subject, wherein the surgical margin was previously determined using a method comprising the steps of: (a) contacting a tissue sample obtained from the subject to a plurality of analyte capture agents, wherein an analyte capture agent of the plurality of analyte capture agents comprises an analyte binding moiety barcode, an analyte capture sequence, and an analyte binding moiety that binds specifically to an analyte; (b) disposing the tissue sample onto an array, wherein the array comprises a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises a spatial barcode and a capture domain that binds specifically to the analyte capture sequence; (c) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte binding moiety barcode or a complement thereof, and (ii) all or a part of a nucleic acid sequence corresponding to the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue sample; (d) comparing presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the surgical margin based on the comparison.

In some embodiments, the analyte is a protein. In some embodiments, the analyte is a full-length protein. In some embodiments, the analyte is a fragment of a protein. In some embodiments, the analyte is a byproduct of a protein. In some embodiments, the protein is any of the exemplary cancer biomarkers described herein.

In some embodiments of any of the methods described herein, each of the plurality of analyte capture agents comprises an analyte binding moiety barcode, an analyte capture sequence, and an analyte binding moiety that binds specifically to an analyte. In some embodiments, the analyte binding moiety is an antibody or an antigen-binding antibody fragment (e.g., a Fab). Any other suitable protein binding moiety known in the art can also be used as an analyte binding moiety. In some embodiments, the analyte binding moiety barcode can be any barcode described herein. In some embodiments, the analyte capture sequence can be any analyte capture sequence described herein. In some embodiments of any of the methods described herein, each of the plurality of capture probes comprises a spatial barcode and a capture domain that binds specifically to the analyte capture sequence. The capture probe can be any capture probe described herein. In some embodiments, the capture domain of the capture probe comprises a sequence that is substantially complementary (e.g., at least 80%, at least 85%, at least 90%, at least 95%, at least 99%, or 100% complementary) to a portion of the analyte capture sequence. In some embodiments, the capture domain can have a total of about 10 nucleotides to about 125 nucleotides (or any of the subranges of this range described herein). In some embodiments, the sequence that is substantially complementary to a portion of the analyte capture sequence can be a random sequence. In some embodiments, the sequence that is substantially complementary to a portion of the analyte capture sequence can include a poly(T) oligonucleotide sequence (e.g., at least 5 contiguous Ts, at least 10 contiguous Ts, or at least 15 contiguous Ts).

In some embodiments, the determining of the sequence is by sequencing. In some embodiments, the sequencing is high throughput sequencing, sequencing by hybridization, or any of the other methods for sequencing described herein or known in the art. For example, sequencing can involve one or more of nucleic acid amplification, the ligation or addition of one or more sequencing adaptors, cleavage of the capture probe from the array, extension of the capture probe using the bound analyte capture sequence as a template, and generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe. Non-limiting methods for determining the sequence of (i) all or a part of the nucleic acid sequence corresponding to the analyte binding moiety barcode, or a complement thereof, or (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode, or a complement thereof, are described herein or are known in the art.

In some embodiments, the tissue to be resected is or comprises a tumor (e.g., a malignant or a benign tumor). In some embodiments, the tumor is a solid tumor. In some embodiments, the subject is suspected of having a cancer. In some embodiments, the subject has been previously diagnosed or identified as having a cancer (e.g., any of the exemplary cancers described herein).

In some embodiments, the tissue to be resected can include a tumor (e.g., a malignant tumor) of any of the types of cancer describes herein.

In some embodiments, the analyte is a tumor biomarker. In some embodiments, the analyte is a tumor antigen. Exemplary tumor antigens include, but are not limited to, any of the exemplary tumor antigens described herein.

In some embodiments, the tissue to be resected is or comprises an infected tissue, a necrotic tissue, or a diseased tissue. In some embodiments, the analyte can be associated with an infection, necrosis, inflammation, or disease. Non-limiting examples of such analytes are known in the art.

In some embodiments, the tissue to be resected is infected by a bacterium (e.g., any of the exemplary bacteria described herein), a parasite or protozoa (e.g., any of the exemplary parasites or protozoa described herein), a fungus (e.g., any of the exemplary fungi described herein), or a virus (e.g., any of the exemplary viruses described herein).

In some embodiments, the methods provided herein comprise comparing the presence of the analyte at the location in the tissue sample to presence of the analyte at different location(s) in the tissue sample, and determining the size and site of a tissue to be resected from the subject based on the comparison. In some embodiments, the different location(s) in the tissue sample are reference location(s). In some embodiments, the reference location(s) in the tissue sample are locations of healthy tissue. In some embodiments, the reference location(s) in the tissue sample are locations of non-cancerous tissue. In some embodiments, the reference location(s) in the tissue sample are locations of non-tumor tissue. In some embodiments, the reference location(s) in the tissue sample are locations with no abnormalities such as tumor, cancer, necrosis, inflammation, infection, or disease.

In some embodiments, the presence of the analyte at the location in the tissue sample is significantly different from the presence of the analyte at the different location(s) in the tissue. In some embodiments, the presence of the analyte at the location in the tissue sample is significantly greater than the presence of the analyte at the different location(s) in the tissue sample. In some embodiments, the presence of the analyte at the location in the tissue sample is significantly less than the presence of the analyte at the different location(s) in the tissue sample.

In some embodiments, the location at the tissue sample is determined to be resected if the presence of the analyte at the location in the tissue sample is significantly different from the presence of the analyte at the different location(s). In some embodiments, the location at the tissue sample is determined to be resected if the presence of the analyte at the location in the tissue sample is significantly greater than the presence of the analyte at the different location(s). In some embodiments, the location at the tissue sample is determined to be resected if the presence of the analyte at the location in the tissue sample is significantly less than the presence of the analyte at the different location(s).

In some embodiments, the presence of the analyte at the location in the tissue sample is about 0.1-fold to about 100-fold (e.g., or any of the subranges of this range described herein) greater than the presence of the analyte at the different location(s).

In some embodiments, the presence of the analyte at the location in the tissue sample is about 1% to about 99% (e.g., or any of the subranges of this range described herein) decreased than the presence of the analyte at the different location(s).

In some embodiments, the presence of certain biomarkers associated with a cancer and/or disease (e.g., breast cancer biomarkers in ductal carcinoma) at a location in a tissue sample are evaluated. If the presence of certain biomarkers associated with a cancer and/or disease are below a threshold value for those biomarkers, the location in the tissue sample is considered “clear.” If the presence of certain biomarkers associated with a cancer and/or disease are above a threshold value for those biomarkers, the location in the tissue sample is considered within the margin of nerve and/or blood vessel to be resected.

In some embodiments, the method further comprises comparing presence of one or more additional analyte(s) at the location in the tissue sample with the presence of the one or more additional analyte(s) at the different location(s) in the tissue sample. In some embodiments, the presence of a total of about 1 to about 20,000 (e.g., or any of the subranges of this range described herein) analyte(s) at the location are compared to the presence of the analyte(s) at the different location(s).

In some embodiments of any one of the methods described herein, mutant cells are identified according to the presence of the one or more analyte(s) at the location in the tissue sample. In some embodiments, a mutant cell is identified according to the presence of one or more biomarkers described herein. In some embodiments, a mutant cell is identified according to the presence of one or more cell-surface biomarkers, e.g., a cell-surface receptor, at the location in the tissue sample.

In some embodiments, a cell within a location at the tissue sample is identified as a mutant cell if the presence of the one or more analyte(s) at the location in the tissue sample are significantly different from the presence of the analyte(s) at the different location(s). In some embodiments, a cell within a location at the tissue sample is identified as a mutant cell if the presence of the one or more analyte(s) at the location in the tissue sample are significantly greater than the presence of the analyte(s) at the different location(s). In some embodiments, the mutant cell(s) within the location at the tissue sample is determined to be resected if the presence of the analyte(s) at the location in the tissue sample are significantly less than the presence of the analyte at the different location(s).

In some embodiments, a location at the tissue sample comprises about 1 to about 100,000 cells.

The spatial barcode of the capture probe can be any spatial barcode described herein.

In some embodiments of any of the methods described herein, the array can be any of the types of arrays described herein. For example, the array comprises a slide. In some embodiments, the capture probe is attached to the slide (e.g., by its 5′ end).

In some embodiments of any of the methods described herein, the array is a bead array. In some embodiments, a 5′ end of the capture probe is attached to a bead of the bead array.

In some embodiments of any of the methods described herein, the method comprises extending a 3′ end of the capture probe using the specifically bound analyte or analyte binding agent barcode as a template to generate an extended capture probe.

In some embodiments, additional methods are used in combination with the methods described herein to determine the site and size of the tissue to be resected in a subject. In some embodiments, medical imaging modalities such as computed tomography (CT) and magnetic resonance imaging (MRI) are used in combination with the methods described herein. In some embodiments, a position emission tomography (PET) is used in combination with the methods described herein. For example, an initial scanning of a cancer patient and/or imaging of a tissue sample from a cancer patient can be performed using, e.g., MRI, CT, and/or PET prior to the methods described herein, and a preliminary assessment of a surgical margin can be performed. The initial information can provide guidance on, e.g., where to obtain the tissue sample for use in the methods described herein, the size of the tissue sample, and/or the number of tissue samples needed. In another example, a follow-up scanning and/or imaging can be performed using e.g., MRI, CT, and/or PET after the methods described herein are performed. The follow-up scanning and/or imaging provide information on, e.g., the clearance of the cancerous and/or diseased tissue, and whether there are residual cancerous and/or diseased tissue. Any other suitable methods known in the art can also be used in combination with the methods described herein.

Some embodiments of any of the methods described herein can further include obtaining the tissue sample from the subject (e.g., obtain a biopsy sample from the subject).

In some embodiments of any of the methods described herein, at least a portion of the tissue to be resected includes cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and/or diseased tissue. In some embodiments, at least 80%, at least 85%, at least 90%, at least 95%, at least 99%, or 100% of the tissue to be resected includes one or more of cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and disease tissue.

In some embodiments of any of the methods described herein, the surgical margin can be the margin between the location(s) of one or more of cancer cell(s), pre-cancerous cell(s), necrotic cell(s), infected cell(s), and disease tissue, and the location(s) of healthy or normal tissue, in a subject.

In some embodiments, the methods described herein comprise excising a nerve and/or blood vessel that is within the determined surgical margin in the subject. In some embodiments, at least 80%, at least 85%, at least 90%, at least 95%, or at least 99% of the nerve and/or blood vessel that is within the determined surgical margin are excised.

In some embodiments, the excision of a nerve and/or blood vessel is considered successful when less than 20%, less than 15%, less than 10%, less than 5%, or zero nerve and/or blood vessel that is within the determined surgical margin is detected post-excision as compared to the identified nerve and/or blood vessel that is within the determined surgical margin prior to the resection.

In some embodiments, the treatment is considered successful when less than 20%, less than 15%, less than 10%, less than 5%, or zero nerve and/or blood vessel that is within the determined surgical margin is detected post-excision as compared to the identified nerve and/or blood vessel that is within the determined surgical margin prior to the resection.

In some embodiments, the methods described herein comprise avoiding excision of a nerve and/or blood vessel outside of the determined surgical margin in the subject. In some embodiments, no more than 20%, no more than 15%, no more than 10%, no more than 8%, no more than 6%, no more than 4%, no more than 2%, or no more than 1% of the nerve and/or blood vessel outside of the determined surgical margin is excised.

The term “presence” as used herein refers to the existence and/or level(s) of any object(s) (e.g., an analyte) being measured, quantified, and/or compared in any of the methods described herein.

Exemplary Embodiments

Embodiment 1. A method of determining size and site of a tissue to be resected from a subject, the method comprising:

-   -   (a) contacting a tissue sample obtained from the subject to an         array comprising a plurality of capture probes, wherein a         capture probe of the plurality of capture probes comprises (i) a         capture domain that binds specifically to an analyte of the         tissue sample and (ii) a spatial barcode;     -   (b) determining (i) all or a part of a nucleic acid sequence         corresponding to the analyte specifically bound to the capture         domain or a complement thereof, and (ii) all or a part of a         nucleic acid sequence corresponding to the spatial barcode or a         complement thereof, and using the determined nucleic acid         sequences of (i) and (ii) to identify the presence of the         analyte at a location in the tissue sample;     -   (c) comparing the presence of the analyte at the location in the         tissue sample to presence of the analyte at a different location         in the tissue sample, and determining the size and site of the         tissue to be resected from the subject based on the comparison.

Embodiment 2. The method of Embodiment 1, wherein the tissue to be resected is a tumor.

Embodiment 3. The method of Embodiment 1, wherein the tissue to be resected is infected tissue, necrotic tissue, or diseased tissue.

Embodiment 4. The method of Embodiment 1 or 2, wherein the subject is suspected of or diagnosed as having a cancer.

Embodiment 5. The method of Embodiment 4, wherein the cancer is breast cancer.

Embodiment 6. The method of Embodiment 1, wherein the subject is suspected of or diagnosed as having ductal carcinoma in situ.

Embodiment 7. The method of any one of Embodiments 1-6, wherein the analyte is RNA.

Embodiment 8. The method of Embodiment 7, wherein the RNA is mRNA.

Embodiment 9. The method of any one of Embodiments 1-6, wherein the analyte is DNA.

Embodiment 10. The method of Embodiment 9, wherein the DNA is genomic DNA.

Embodiment 11. The method of any one of Embodiments 1-10, wherein the array comprises a slide having the plurality of capture probes.

Embodiment 12. The method of any one of Embodiments 1-10, wherein the array is a bead array.

Embodiment 13. The method of any one of Embodiments 1-12, wherein step (b) comprises sequencing (i) all or a part of the nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof.

Embodiment 14. The method of Embodiment 13, wherein the sequencing is high throughput sequencing.

Embodiment 15. The method of any one of Embodiments 1-12, wherein step (b) comprises extending a 3′ end of the capture probe using the specifically bound analyte as a template to generate an extended capture probe.

Embodiment 16. The method of Embodiment 15, wherein step (b) further comprises generating a single-stranded nucleic acid comprising a nucleic acid sequence that is complementary to all or a part of the extended capture probe.

Embodiment 17. A method of determining size and site of a tissue to be resected from a subject, the method comprising:

-   -   (a) contacting a tissue sample obtained from the subject to a         plurality of analyte capture agents, wherein an analyte capture         agent of the plurality of analyte capture agents comprises an         analyte binding moiety barcode, an analyte capture sequence, and         an analyte binding moiety that binds specifically to an analyte;     -   (b) disposing the tissue sample onto an array, wherein the array         comprises a plurality of capture probes, wherein a capture probe         of the plurality of capture probes comprises a spatial barcode         and a capture domain that binds specifically to the analyte         capture sequence;     -   (c) determining (i) all or a part of a nucleic acid sequence         corresponding to the analyte binding moiety barcode or a         complement thereof, and (ii) all or a part of a nucleic acid         sequence corresponding to the spatial barcode or a complement         thereof, and using the determined nucleic acid sequences of (i)         and (ii) to identify the presence of the analyte at a location         in the tissue sample;     -   (d) comparing the presence of the analyte at the location in the         tissue sample to the presence of the analyte at different         location(s) in the tissue sample, and determining the size and         site of the tissue to be resected from the subject based on the         comparison.

Embodiment 18. The method of Embodiment 17, wherein the tissue to be resected is a tumor.

Embodiment 19. The method of Embodiment 17, wherein the tissue to be resected is infected tissue, necrotic tissue, or diseased tissue.

Embodiment 20. The method of Embodiment 17 or 18, wherein the subject is suspected of or diagnosed as having a cancer.

Embodiment 21. The method of Embodiment 20, wherein the cancer is breast cancer.

Embodiment 22. The method of Embodiment 17, wherein the subject is suspected of or diagnosed as having ductal carcinoma in situ.

Embodiment 23. The method of any one of Embodiments 17-22, wherein the analyte is a protein.

Embodiment 24. The method of Embodiment 23, wherein the analyte is an intracellular protein.

Embodiment 25. The method of Embodiment 23, wherein the analyte is an extracellular protein.

Embodiment 26. The method of any one of Embodiments 23-25, wherein the analyte binding moiety is an antibody or an antigen-binding antibody fragment.

Embodiment 27. The method of any one of Embodiments 17-26, wherein the array comprises a slide having the plurality of capture probes.

Embodiment 28. The method of any one of Embodiments 17-26, wherein the array is a bead array.

Embodiment 29. The method of any one of Embodiments 17-28, wherein step (c) comprises sequencing (i) all or a part of the nucleic acid sequence corresponding to the analyte binding moiety barcode or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof.

Embodiment 30. The method of Embodiment 29, wherein the sequencing is high throughput sequencing.

Embodiment 31. The method of any one of Embodiments 17-30, wherein step (c) comprises extending a 3′ end of the capture probe using the specifically bound analyte capture agent as a template to generate an extended capture probe.

Embodiment 32. The method of Embodiment 31, wherein step (c) further comprises generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe.

Embodiment 33. A method of treating a subject in need thereof, the method comprising:

-   -   resecting tissue from the subject using a surgical margin         previously determined using a method comprising the steps of:     -   (a) contacting a tissue sample obtained from the subject to an         array comprising a plurality of capture probes, wherein a         capture probe of the plurality of capture probes comprises (i) a         capture domain that specifically binds to an analyte of the         tissue sample and (ii) a spatial barcode;     -   (b) determining (i) all or a part of a nucleic acid sequence         corresponding to the analyte specifically bound to the capture         domain or a complement thereof, and (ii) all or a part of a         nucleic acid sequence corresponding to the spatial barcode or a         complement thereof, and using the determined nucleic acid         sequences of (i) and (ii) to identify the presence of the         analyte at a location in the tissue sample;     -   (c) comparing the presence of the analyte at the location in the         tissue sample to presence of the analyte at a different location         in the tissue sample, and determining the surgical margin based         on the comparison.

Embodiment 34. The method of Embodiment 33, wherein the resected tissue is a tumor.

Embodiment 35. The method of Embodiment 33, wherein the resected tissue is infected tissue, necrotic tissue, or diseased tissue.

Embodiment 36. The method of Embodiment 33 or 34, wherein the subject is suspected of or diagnosed as having a cancer.

Embodiment 37. The method of Embodiment 36, wherein the cancer is breast cancer.

Embodiment 38. The method of Embodiment 33, wherein the subject is suspected of or diagnosed as having ductal carcinoma in situ.

Embodiment 39. The method of any one of Embodiments 33-38, wherein the analyte is RNA.

Embodiment 40. The method of Embodiment 39, wherein the RNA is mRNA.

Embodiment 41. The method of any one of Embodiments 33-38, wherein the analyte is DNA.

Embodiment 42. The method of Embodiment 41, wherein the DNA is genomic DNA.

Embodiment 43. The method of any one of Embodiments 33-42, wherein the array comprises a slide having the plurality of capture probes.

Embodiment 44. The method of any one of Embodiments 33-42, wherein the array is a bead array.

Embodiment 45. The method of any one of Embodiments 33-44, wherein step (b) comprises sequencing (i) all or a part of the nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof.

Embodiment 46. The method of Embodiment 45, wherein the sequencing is high throughput sequencing.

Embodiment 47. The method of any one of Embodiments 33-46, wherein step (b) comprises extending a 3′ end of the capture probe using the specifically bound analyte as a template to generate an extended capture probe.

Embodiment 48. The method of Embodiment 47, wherein step (b) further comprises generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe.

Embodiment 49. A method of treating a subject in need thereof, the method comprising:

-   -   resecting tissue from the subject using a surgical margin         previously determined using a method comprising the steps of:     -   (a) contacting a tissue sample obtained from the subject to a         plurality of analyte capture agents, wherein an analyte capture         agent of the plurality of analyte capture agents comprises an         analyte binding moiety barcode, an analyte capture sequence, and         an analyte binding moiety that binds specifically to an analyte;     -   (b) disposing the tissue sample onto an array, wherein the array         comprises a plurality of capture probes, wherein a capture probe         of the plurality of capture probes comprises a spatial barcode         and a capture domain that binds specifically to the analyte         capture sequence;     -   (c) determining (i) all or a part of a nucleic acid sequence         corresponding to the analyte binding moiety barcode or a         complement thereof, and (ii) all or a part of a nucleic acid         sequence corresponding to the spatial barcode or a complement         thereof, and using the determined nucleic acid sequences of (i)         and (ii) to identify the presence of the analyte at a location         in the tissue sample;     -   (d) comparing the presence of the analyte at the location in the         tissue sample to presence of the analyte at different         location(s) in the tissue sample, and determining the surgical         margin based on the comparison.

Embodiment 50. The method of Embodiment 49, wherein the resected tissue is a tumor.

Embodiment 51. The method of Embodiment 49, wherein the resected tissue is infected tissue, necrotic tissue, or diseased tissue.

Embodiment 52. The method of Embodiment 49 or 50, wherein the subject is suspected of or diagnosed as having a cancer.

Embodiment 53. The method of Embodiment 52, wherein the cancer is breast cancer.

Embodiment 54. The method of Embodiment 49, wherein the subject is suspected of or diagnosed as having ductal carcinoma in situ.

Embodiment 55. The method of any one of Embodiments 49-54, wherein the analyte is a protein.

Embodiment 56. The method of Embodiment 55, wherein the protein is an intracellular protein.

Embodiment 57. The method of Embodiment 55, wherein the protein is an extracellular protein.

Embodiment 58. The method of any one of Embodiments 55-57, wherein the analyte binding moiety is an antibody or an antigen-binding antibody fragment.

Embodiment 59. The method of any one of Embodiments 49-58, wherein the array comprises a slide having the plurality of capture probes.

Embodiment 60. The method of any one of Embodiments 49-58, wherein the array is a bead array.

Embodiment 61. The method of any one of Embodiments 49-60, wherein step (c) comprises sequencing (i) all or a part of the nucleic acid sequence corresponding to the analyte binding moiety barcode or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof.

Embodiment 62. The method of Embodiment 61, wherein the sequencing is high throughput sequencing.

Embodiment 63. The method of any one of Embodiments 49-62, wherein step (c) comprises extending a 3′ end of the capture probe using the specifically bound analyte capture agent as a template to generate an extended capture probe.

Embodiment 64. The method of Embodiment 63, wherein step (c) further comprises generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe.

Embodiment 65. A method of identifying a surgical margin of a tissue to be resected in a subject, the method comprising:

-   -   (a) contacting a tissue sample obtained from the subject to an         array comprising a plurality of capture probes, wherein a         capture probe of the plurality of capture probes comprises (i) a         capture domain that specifically binds to an analyte of the         tissue sample and (ii) a spatial barcode;     -   (b) determining (i) all or a part of a nucleic acid sequence         corresponding to the analyte specifically bound to the capture         domain or a complement thereof, and (ii) all or a part of a         nucleic acid sequence corresponding to the spatial barcode or a         complement thereof, and using the determined nucleic acid         sequences of (i) and (ii) to identify the presence of the         analyte at a location in the tissue sample;     -   (c) comparing the presence of the analyte at the location in the         tissue sample to presence of the analyte at different         location(s) in the tissue sample, and determining the surgical         margin of the tissue to be resected from the subject based on         the comparison.

Embodiment 66. The method of Embodiment 65, wherein the tissue to be resected is a tumor.

Embodiment 67. The method of Embodiment 65, wherein the tissue to be resected is infected tissue, necrotic tissue, or diseased tissue.

Embodiment 68. The method of Embodiment 65 or 66, wherein the subject is suspected of or diagnosed as having a cancer.

Embodiment 69. The method of Embodiment 68, wherein the cancer is breast cancer.

Embodiment 70. The method of Embodiment 65, wherein the subject is suspected of or diagnosed as having ductal carcinoma in situ.

Embodiment 71. The method of any one of Embodiments 65-70, wherein the analyte is RNA.

Embodiment 72. The method of Embodiment 71, wherein the RNA is mRNA.

Embodiment 73. The method of any one of Embodiments 65-70, wherein the analyte is DNA.

Embodiment 74. The method of Embodiment 73, wherein the DNA is genomic DNA.

Embodiment 75. The method of any one of Embodiments 65-74, wherein the array comprises a slide.

Embodiment 76. The method of any one of Embodiments 65-74, wherein the array is a bead array.

Embodiment 77. The method of any one of Embodiments 65-76, wherein step (b) comprises sequencing (i) all or a part of the nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof.

Embodiment 78. The method of Embodiment 77, wherein the sequencing is high throughput sequencing.

Embodiment 79. The method of any one of Embodiments 65-78, wherein step (b) comprises extending a 3′ end of the capture probe using the specifically bound analyte as a template to generate an extended capture probe.

Embodiment 80. The method of Embodiment 79, wherein step (b) further comprises generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe.

Embodiment 81. A method of identifying a surgical margin of a tissue to be resected in a subject, the method comprising:

-   -   (a) contacting a tissue sample obtained from the subject to a         plurality of analyte capture agents, wherein an analyte capture         agent of the plurality of analyte capture agents comprises an         analyte binding moiety barcode, an analyte capture sequence, and         an analyte binding moiety that binds specifically to an analyte;     -   (b) disposing the tissue sample onto an array, wherein the array         comprises a plurality of capture probes, wherein a capture probe         of the plurality of capture probes comprises a spatial barcode         and a capture domain that binds specifically to the analyte         capture sequence;     -   (c) determining (i) all or a part of a nucleic acid sequence         corresponding to the analyte binding moiety barcode or a         complement thereof, and (ii) all or a part of a nucleic acid         sequence corresponding to the spatial barcode or a complement         thereof, and using the determined nucleic acid sequences of (i)         and (ii) to identify the presence of the analyte at a location         in the tissue sample;     -   (d) comparing the presence of the analyte at the location in the         tissue sample to presence of the analyte at different         location(s) in the tissue sample, and determining the surgical         margin of the tissue to be resected from the subject based on         the comparison.

Embodiment 82. The method of Embodiment 81, wherein the tissue to be resected is a tumor.

Embodiment 83. The method of Embodiment 81, wherein the tissue to be resected is infected tissue, necrotic tissue, or diseased tissue.

Embodiment 84. The method of Embodiment 81 or 82, wherein the subject is suspected of or diagnosed as having a cancer.

Embodiment 85. The method of Embodiment 84, wherein the cancer is breast cancer.

Embodiment 86. The method of Embodiment 81, wherein the subject is suspected of or diagnosed as having ductal carcinoma in situ.

Embodiment 87. The method of any one of Embodiments 81-86, wherein the analyte is a protein.

Embodiment 88. The method of Embodiment 87, wherein the protein is an intracellular protein.

Embodiment 89. The method of Embodiment 87, wherein the protein is an extracellular protein.

Embodiment 90. The method of any one of Embodiments 87-89, wherein the analyte binding moiety is an antibody or an antigen-binding antibody fragment.

Embodiment 91. The method of any one of Embodiments 81-90, wherein the array comprises a slide.

Embodiment 92. The method of any one of Embodiments 81-90, wherein the array is a bead array.

Embodiment 93. The method of any one of Embodiments 81-92, wherein step (c) comprises sequencing (i) all or a part of the nucleic acid sequence corresponding to the analyte binding moiety barcode or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof.

Embodiment 94. The method of Embodiment 93, wherein the sequencing is high throughput sequencing.

Embodiment 95. The method of any one of Embodiments 81-94, wherein step (c) comprises extending a 3′ end of the capture probe using the specifically bound analyte capture agent as a template to generate an extended capture probe.

Embodiment 96. The method of Embodiment 95, wherein step (c) further comprises generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe.

Embodiment 97. A method of reducing the risk of re-excision of a tissue from a subject, the method comprising:

-   -   resecting tissue from the subject using a surgical margin         previously determined using a method comprising the steps of:     -   (a) contacting a tissue sample obtained from the subject to an         array comprising a plurality of capture probes, wherein a         capture probe of the plurality of capture probes comprises a (i)         capture domain that specifically binds to an analyte of the         tissue sample and (ii) a spatial barcode;     -   (b) determining (i) all or a part of a nucleic acid sequence         corresponding to the analyte specifically bound to the capture         domain or a complement thereof, and (ii) all or a part of a         nucleic acid sequence corresponding to the spatial barcode or a         complement thereof, and using the determined nucleic acid         sequences of (i) and (ii) to identify the presence of the         analyte at a location in the tissue sample;     -   (c) comparing the presence of the analyte at the location in the         tissue sample to presence of the analyte at different         location(s) in the tissue sample, and determining the surgical         margin based on the comparison.

Embodiment 98. The method of Embodiment 97, wherein the resected tissue is a tumor.

Embodiment 99. The method of Embodiment 97, wherein the resected tissue is infected tissue, necrotic tissue, or diseased tissue.

Embodiment 100. The method of Embodiment 97 or 98, wherein the subject is suspected of or diagnosed as having a cancer.

Embodiment 101. The method of Embodiment 100, wherein the cancer is breast cancer.

Embodiment 102. The method of Embodiment 97, wherein the subject is suspected of or diagnosed as having ductal carcinoma in situ.

Embodiment 103. The method of any one of Embodiments 97-102, wherein the analyte is RNA.

Embodiment 104. The method of Embodiment 103, wherein the RNA is mRNA.

Embodiment 105. The method of any one of Embodiments 97-102, wherein the analyte is DNA.

Embodiment 106. The method of Embodiment 105, wherein the DNA is genomic DNA.

Embodiment 107. The method of any one of Embodiments 97-106, wherein the array comprises a slide having the plurality of capture probes.

Embodiment 108. The method of any one of Embodiments 97-106, wherein the array is a bead array.

Embodiment 109. The method of any one of Embodiments 97-108, wherein step (b) comprises sequencing (i) all or a part of the nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof.

Embodiment 110. The method of Embodiment 109, wherein the sequencing is high throughput sequencing.

Embodiment 111. The method of any one of Embodiments 97-110, wherein step (b) comprises extending a 3′ end of the capture probe using the specifically bound analyte as a template to generate an extended capture probe.

Embodiment 112. The method of Embodiment 111, wherein step (b) further comprises generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe.

Embodiment 113. A method of reducing the risk of re-excision of a tissue from a subject, the method comprising:

-   -   resecting tissue from the subject using a surgical margin         previously determined using a method comprising the steps of:     -   (a) contacting a tissue sample obtained from the subject to a         plurality of analyte capture agents, wherein an analyte capture         agent of the plurality of analyte capture agents comprises an         analyte binding moiety barcode, an analyte capture sequence, and         an analyte binding moiety that binds specifically to an analyte;     -   (b) disposing the tissue sample onto an array, wherein the array         comprises a plurality of capture probes, wherein a capture probe         of the plurality of capture probes comprises a spatial barcode         and a capture domain that binds specifically to the analyte         capture sequence;     -   (c) determining (i) all or a part of a nucleic acid sequence         corresponding to the analyte binding moiety barcode or a         complement thereof, and (ii) all or a part of a nucleic acid         sequence corresponding to the spatial barcode or a complement         thereof, and using the determined nucleic acid sequences of (i)         and (ii) to identify the presence of the analyte at a location         in the tissue sample;     -   (d) comparing the presence of the analyte at the location in the         tissue sample to presence of the analyte at different         location(s) in the tissue sample, and determining the surgical         margin based on the comparison.

Embodiment 114. The method of Embodiment 113, wherein the resected tissue is a tumor.

Embodiment 115. The method of Embodiment 113, wherein the resected tissue is infected tissue, necrotic tissue, or diseased tissue.

Embodiment 116. The method of Embodiment 113 or 114, wherein the subject is suspected of or diagnosed as having a cancer.

Embodiment 117. The method of Embodiment 116, wherein the cancer is breast cancer.

Embodiment 118. The method of Embodiment 113, wherein the subject is suspected of or diagnosed as having ductal carcinoma in situ.

Embodiment 119. The method of any one of Embodiments 113-118, wherein the analyte is a protein.

Embodiment 120. The method of Embodiment 119, wherein the protein is intracellular.

Embodiment 121. The method of Embodiment 119, wherein the protein is extracellular.

Embodiment 122. The method of any one of Embodiments 119-121, wherein the analyte binding moiety is an antibody or an antigen-binding antibody fragment.

Embodiment 123. The method of any one of Embodiments 113-122, wherein the array comprises a slide having the plurality of capture probes.

Embodiment 124. The method of any one of Embodiments 113-122, wherein the array is a bead array.

Embodiment 125. The method of any one of Embodiments 113-124, wherein step (c) comprises sequencing (i) all or a part of the nucleic acid sequence corresponding to the analyte binding moiety barcode or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof.

Embodiment 126. The method of Embodiment 125, wherein the sequencing is high throughput sequencing.

Embodiment 127. The method of any one of Embodiments 113-126, wherein step (c) comprises extending a 3′ end of the capture probe using the specifically bound analyte capture agent as a template to generate an extended capture probe.

Embodiment 128. The method of Embodiment 127, wherein step (c) further comprises generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe.

Embodiment 129. A method of reducing the rate of recurrence of a tissue abnormality in a subject, the method comprising:

-   -   resecting tissue from the subject using a surgical margin         previously determined using a method comprising the steps of:     -   (a) contacting a tissue sample obtained from the subject to an         array comprising a plurality of capture probes, wherein a         capture probe of the plurality of capture probes comprises a (i)         capture domain that specifically binds to an analyte of the         tissue sample and (ii) a spatial barcode;     -   (b) determining (i) all or a part of a nucleic acid sequence         corresponding to the analyte specifically bound to the capture         domain or a complement thereof, and (ii) all or a part of a         nucleic acid sequence corresponding to the spatial barcode or a         complement thereof, and using the determined nucleic acid         sequences of (i) and (ii) to identify the presence of the         analyte at a location in the tissue sample;     -   (c) comparing the presence of the analyte at the location in the         tissue sample to presence of the analyte at different         location(s) in the tissue sample, and determining the surgical         margin based on the comparison.

Embodiment 130. The method of Embodiment 129, wherein the resected tissue is a tumor.

Embodiment 131. The method of Embodiment 129, wherein the resected tissue is infected tissue, necrotic tissue, or diseased tissue.

Embodiment 132. The method of Embodiment 129 or 130, wherein the subject is suspected of or diagnosed as having a cancer.

Embodiment 133. The method of Embodiment 132, wherein the cancer is breast cancer.

Embodiment 134. The method of Embodiment 129, wherein the subject is suspected of or diagnosed as having ductal carcinoma in situ.

Embodiment 135. The method of any one of Embodiments 129-134, wherein the analyte is RNA.

Embodiment 136. The method of Embodiment 135, wherein the RNA is mRNA.

Embodiment 137. The method of any one of Embodiments 129-134, wherein the analyte is DNA.

Embodiment 138. The method of Embodiment 137, wherein the DNA is genomic DNA.

Embodiment 139. The method of any one of Embodiments 129-138, wherein the array comprises a slide having the plurality of capture probes.

Embodiment 140. The method of any one of Embodiments 129-138, wherein the array is a bead array.

Embodiment 141. The method of any one of Embodiments 129-140, wherein step (b) comprises sequencing (i) all or a part of the nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof.

Embodiment 142. The method of Embodiment 141, wherein the sequencing is high throughput sequencing.

Embodiment 143. The method of any one of Embodiments 129-142, wherein step (b) comprises extending a 3′ end of the capture probe using the specifically bound analyte as a template to generate an extended capture probe.

Embodiment 144. The method of Embodiment 143, wherein step (b) further comprises generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe.

Embodiment 145. A method of reducing the rate of recurrence of a tissue abnormality in a subject, the method comprising:

-   -   resecting tissue from the subject using a surgical margin         previously determined using a method comprising the steps of:     -   (a) contacting a tissue sample obtained from the subject to a         plurality of analyte capture agents, wherein an analyte capture         agent of the plurality of analyte capture agents comprises an         analyte binding moiety barcode, an analyte capture sequence, and         an analyte binding moiety that binds specifically to an analyte;     -   (b) disposing the tissue sample onto an array, wherein the array         comprises a plurality of capture probes, wherein a capture probe         of the plurality of capture probes comprises a spatial barcode         and a capture domain that binds specifically to the analyte         capture sequence;     -   (c) determining (i) all or a part of a nucleic acid sequence         corresponding to the analyte binding moiety barcode or a         complement thereof, and (ii) all or a part of a nucleic acid         sequence corresponding to the spatial barcode or a complement         thereof, and using the determined nucleic acid sequences of (i)         and (ii) to identify the presence of the analyte at a location         in the tissue sample;     -   (d) comparing the presence of the analyte at the location in the         tissue sample to presence of the analyte at different         location(s) in the tissue sample, and determining the surgical         margin based on the comparison.

Embodiment 146. The method of Embodiment 145, wherein the resected tissue is a tumor.

Embodiment 147. The method of Embodiment 145, wherein the resected tissue is infected tissue, necrotic tissue, or diseased tissue.

Embodiment 148. The method of Embodiment 145 or 146, wherein the subject is suspected of or diagnosed as having a cancer.

Embodiment 149. The method of Embodiment 148, wherein the cancer is breast cancer.

Embodiment 150. The method of Embodiment 145, wherein the subject is suspected of or diagnosed as having ductal carcinoma in situ.

Embodiment 151. The method of any one of Embodiments 145-150, wherein the analyte is a protein.

Embodiment 152. The method of Embodiment 151, wherein the protein is an intracellular protein.

Embodiment 153. The method of Embodiment 151, wherein the protein is an extracellular protein.

Embodiment 154. The method of any one of Embodiments 151-153, wherein the analyte binding moiety is an antibody or an antigen-binding antibody fragment.

Embodiment 155. The method of any one of Embodiments 145-154, wherein the array comprises a slide having the plurality of capture probes.

Embodiment 156. The method of any one of Embodiments 145-154, wherein the array is a bead array.

Embodiment 157. The method of any one of Embodiments 145-156, wherein step (c) comprises sequencing (i) all or a part of the nucleic acid sequence corresponding to the analyte binding moiety barcode or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof.

Embodiment 158. The method of Embodiment 157, wherein the sequencing is high throughput sequencing.

Embodiment 159. The method of any one of Embodiments 145-158, wherein step (c) comprises extending a 3′ end of the capture probe using the specifically bound analyte capture agent as a template to generate an extended capture probe.

Embodiment 160. The method of Embodiment 159, wherein step (c) further comprises generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe.

Embodiment 161. A method of treating a subject, the method comprising:

-   -   excising a nerve or blood vessel that is within a surgical         margin in the subject, or avoiding excision of a nerve or blood         vessel outside of the surgical margin in the subject, wherein         the surgical margin was previously determined using a method         comprising the steps of:     -   (a) contacting a tissue sample obtained from the subject to an         array comprising a plurality of capture probes, wherein a         capture probe of the plurality of capture probes comprises a (i)         capture domain that specifically binds to an analyte of the         tissue sample and (ii) a spatial barcode;     -   (b) determining (i) all or a part of a nucleic acid sequence         corresponding to the analyte specifically bound to the capture         domain or a complement thereof, and (ii) all or a part of a         nucleic acid sequence corresponding to the spatial barcode or a         complement thereof, and using the determined nucleic acid         sequences of (i) and (ii) to identify the presence of the         analyte at a location in the tissue sample;     -   (c) comparing the presence of the analyte at the location in the         tissue sample to presence of the analyte at different         location(s) in the tissue sample, and determining the surgical         margin based on the comparison.

Embodiment 162. The method of Embodiment 161, wherein the subject is suspected of or diagnosed as having a cancer.

Embodiment 163. The method of Embodiment 162, wherein the cancer is breast cancer.

Embodiment 164. The method of Embodiment 161, wherein the subject is suspected of or diagnosed as having ductal carcinoma in situ.

Embodiment 165. The method of any one of Embodiments 161-164, wherein the analyte is RNA.

Embodiment 166. The method of Embodiment 165, wherein the RNA is mRNA.

Embodiment 167. The method of any one of Embodiments 161-164, wherein the analyte is DNA.

Embodiment 168. The method of Embodiment 167, wherein the DNA is genomic DNA.

Embodiment 169. The method of any one of Embodiments 161-168, wherein the array comprises a slide having the plurality of capture probes.

Embodiment 170. The method of any one of Embodiments 161-169, wherein the array is a bead array.

Embodiment 171. The method of any one of Embodiments 161-170, wherein step (b) comprises sequencing (i) all or a part of the nucleic acid sequence corresponding to the analyte specifically bound to the capture domain or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof.

Embodiment 172. The method of Embodiment 171, wherein the sequencing is high throughput sequencing.

Embodiment 173. The method of any one of Embodiments 161-172, wherein step (b) comprises extending a 3′ end of the capture probe using the specifically bound analyte as a template to generate an extended capture probe.

Embodiment 174. The method of Embodiment 173, wherein step (b) further comprises generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe.

Embodiment 175. The method of any one of Embodiments 161-174, wherein the method excising a nerve or blood vessel that is within the surgical margin in the subject.

Embodiment 176. The method of any one of Embodiments 161-174, wherein the method comprises avoiding excision of a nerve or blood vessel outside of the surgical margin in the subject.

Embodiment 177. A method of treating a subject, the method comprising:

-   -   excising a nerve or blood vessel that is within a surgical         margin in the subject, or avoiding excision of a nerve or blood         vessel outside of the surgical margin in the subject, wherein         the surgical margin was previously determined using a method         comprising the steps of:     -   (a) contacting a tissue sample obtained from the subject to a         plurality of analyte capture agents, wherein an analyte capture         agent of the plurality of analyte capture agents comprises an         analyte binding moiety barcode, an analyte capture sequence, and         an analyte binding moiety that binds specifically to an analyte;     -   (b) disposing the tissue sample onto an array, wherein the array         comprises a plurality of capture probes, wherein a capture probe         of the plurality of capture probes comprises a spatial barcode         and a capture domain that binds specifically to the analyte         capture sequence;     -   (c) determining (i) all or a part of a nucleic acid sequence         corresponding to the analyte binding moiety barcode or a         complement thereof, and (ii) all or a part of a nucleic acid         sequence corresponding to the spatial barcode or a complement         thereof, and using the determined nucleic acid sequences of (i)         and (ii) to identify the presence of the analyte at a location         in the tissue sample;     -   (d) comparing presence of the analyte at the location in the         tissue sample to presence of the analyte at different         location(s) in the tissue sample, and determining the surgical         margin based on the comparison.

Embodiment 178. The method of Embodiment 177, wherein the subject is suspected of or diagnosed as having a cancer.

Embodiment 179. The method of Embodiment 178, wherein the cancer is breast cancer.

Embodiment 180. The method of Embodiment 177, wherein the subject is suspected of or diagnosed as having ductal carcinoma in situ.

Embodiment 181. The method of any one of Embodiments 177-180, wherein the analyte is a protein.

Embodiment 182. The method of Embodiment 181, wherein the protein is an intracellular protein.

Embodiment 183. The method of Embodiment 181, wherein the protein is an extracellular protein.

Embodiment 184. The method of any one of Embodiments 181-183, wherein the analyte binding moiety is an antibody or an antigen-binding antibody fragment.

Embodiment 185. The method of any one of Embodiments 177-184, wherein the array comprises a slide having the plurality of capture probes.

Embodiment 186. The method of any one of Embodiments 177-184, wherein the array is a bead array.

Embodiment 187. The method of any one of Embodiments 177-186, wherein step (c) comprises sequencing (i) all or a part of the nucleic acid sequence corresponding to the analyte binding moiety barcode or a complement thereof, and (ii) all or a part of the nucleic acid sequence corresponding to the spatial barcode or a complement thereof.

Embodiment 188. The method of Embodiment 187, wherein the sequencing is high throughput sequencing.

Embodiment 189. The method of any one of Embodiments 177-188, wherein step (c) comprises extending a 3′ end of the capture probe using the specifically bound analyte capture agent as a template to generate an extended capture probe.

Embodiment 190. The method of Embodiment 189, wherein step (c) further comprises generating a single-stranded nucleic acid comprising a sequence that is complementary to all or a part of the extended capture probe.

Embodiment 191. The method of any one of Embodiments 177-190, wherein the method comprises excising a nerve or blood vessel that is within the surgical margin in the subject.

Embodiment 192. The method of any one of Embodiments 177-190, wherein the method comprises avoiding excision of a nerve or blood vessel outside of the surgical margin in the subject. 

What is claimed is:
 1. A method of determining a surgical margin of a tissue to be resected in a subject, the method comprising: (a) contacting a tissue section obtained from the subject to a first substrate; (b) aligning the first substrate with a second substrate comprising an array, such that at least a portion of the biological sample is aligned with at least a portion of the array, wherein the array comprises a plurality of capture probes, wherein a capture probe of the plurality of capture probes comprises: (i) a spatial barcode and (ii) a capture domain; (c) permeabilizing the tissue section and hybridizing the analyte to the capture domain; (d) determining (i) all or a part of a nucleic acid sequence corresponding to the analyte hybridized to the capture domain or a complement thereof, and (ii) the spatial barcode or a complement thereof, and using the determined nucleic acid sequences of (i) and (ii) to identify the presence of the analyte at a location in the tissue section; and (e) comparing the presence of the analyte at the location in the tissue section to presence of the analyte at one or more different locations in the tissue section, thereby determining the surgical margin of the tissue to be resected from the subject based on the comparison. 